[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"research-sidebar-rollups":3,"research-niche-uk-sports-outdoors-tennis-trainer":137},[4,11,18,25,32,39,46,53,60,67,74,81,88,95,102,109,116,123,130],{"nodeId":5,"label":6,"slug":7,"href":8,"nichesTracked":9,"marketSizeTotal":10},"11052591","Home & Garden","home-garden","\u002Fresearch\u002Fuk\u002Fhome-garden",5777,1496729572,{"nodeId":12,"label":13,"slug":14,"href":15,"nichesTracked":16,"marketSizeTotal":17},"344155031","Grocery","grocery","\u002Fresearch\u002Fuk\u002Fgrocery",2977,930144869,{"nodeId":19,"label":20,"slug":21,"href":22,"nichesTracked":23,"marketSizeTotal":24},"66280031","Health & Personal Care","health-personal-care","\u002Fresearch\u002Fuk\u002Fhealth-personal-care",2063,840581432,{"nodeId":26,"label":27,"slug":28,"href":29,"nichesTracked":30,"marketSizeTotal":31},"560800","Electronics & Photo","electronics-photo","\u002Fresearch\u002Fuk\u002Felectronics-photo",1488,662299037,{"nodeId":33,"label":34,"slug":35,"href":36,"nichesTracked":37,"marketSizeTotal":38},"117333031","Beauty","beauty","\u002Fresearch\u002Fuk\u002Fbeauty",2481,653104681,{"nodeId":40,"label":41,"slug":42,"href":43,"nichesTracked":44,"marketSizeTotal":45},"79904031","DIY & Tools","diy-tools","\u002Fresearch\u002Fuk\u002Fdiy-tools",2225,502438109,{"nodeId":47,"label":48,"slug":49,"href":50,"nichesTracked":51,"marketSizeTotal":52},"340832031","Computers & Accessories","computers-accessories","\u002Fresearch\u002Fuk\u002Fcomputers-accessories",1028,445978821,{"nodeId":54,"label":55,"slug":56,"href":57,"nichesTracked":58,"marketSizeTotal":59},"11961408031","Fashion","fashion","\u002Fresearch\u002Fuk\u002Ffashion",2461,370780225,{"nodeId":61,"label":62,"slug":63,"href":64,"nichesTracked":65,"marketSizeTotal":66},"340841031","Pet Supplies","pet-supplies","\u002Fresearch\u002Fuk\u002Fpet-supplies",875,283781189,{"nodeId":68,"label":69,"slug":70,"href":71,"nichesTracked":72,"marketSizeTotal":73},"595314","Toys & Games","toys-games","\u002Fresearch\u002Fuk\u002Ftoys-games",1773,238165752,{"nodeId":75,"label":76,"slug":77,"href":78,"nichesTracked":79,"marketSizeTotal":80},"319530011","Sports & Outdoors","sports-outdoors","\u002Fresearch\u002Fuk\u002Fsports-outdoors",792,192105477,{"nodeId":82,"label":83,"slug":84,"href":85,"nichesTracked":86,"marketSizeTotal":87},"192414031","Stationery & Office Supplies","stationery-office-supplies","\u002Fresearch\u002Fuk\u002Fstationery-office-supplies",835,166331511,{"nodeId":89,"label":90,"slug":91,"href":92,"nichesTracked":93,"marketSizeTotal":94},"60032031","Baby Products","baby-products","\u002Fresearch\u002Fuk\u002Fbaby-products",638,162171515,{"nodeId":96,"label":97,"slug":98,"href":99,"nichesTracked":100,"marketSizeTotal":101},"248878031","Automotive","automotive","\u002Fresearch\u002Fuk\u002Fautomotive",811,162029817,{"nodeId":103,"label":104,"slug":105,"href":106,"nichesTracked":107,"marketSizeTotal":108},"5866055031","Business, Industry & Science","business-industry-science","\u002Fresearch\u002Fuk\u002Fbusiness-industry-science",741,147753245,{"nodeId":110,"label":111,"slug":112,"href":113,"nichesTracked":114,"marketSizeTotal":115},"213078031","Lighting","lighting","\u002Fresearch\u002Fuk\u002Flighting",370,66322056,{"nodeId":117,"label":118,"slug":119,"href":120,"nichesTracked":121,"marketSizeTotal":122},"908799031","Large Appliances","large-appliances","\u002Fresearch\u002Fuk\u002Flarge-appliances",75,45125377,{"nodeId":124,"label":125,"slug":126,"href":127,"nichesTracked":128,"marketSizeTotal":129},"340838031","Musical Instruments & DJ","musical-instruments-dj","\u002Fresearch\u002Fuk\u002Fmusical-instruments-dj",171,40128933,{"nodeId":131,"label":132,"slug":133,"href":134,"nichesTracked":135,"marketSizeTotal":136},"72954031","Everything Else","everything-else","\u002Fresearch\u002Fuk\u002Feverything-else",25,1318358,{"amazonNicheId":138,"marketplaceFlag":139,"country":140,"category":143,"niche":144,"verdict":180,"baselines":218,"demand":223,"seasonality":415,"brandShare":428,"products":448,"feedback":504,"searchTerms":598,"related":648,"lastUpdated":165},"0341d5c5-e9ad-4365-a0ae-5903d755ebd5","uk",{"flag":139,"name":141,"currency":142},"United Kingdom","GBP",{"nodeId":75,"label":76,"slug":77,"href":78},{"marketSize":145,"searchVolume":146,"growth360":147,"growth90":148,"searchConversion":149,"top5ClickShare":150,"top5BrandShare":150,"avgRating":151,"avgReviewCount":152,"avgPrice":153,"priceMin":154,"priceMax":155,"productCount":156,"unitsSoldMax":157,"sponsoredPct":158,"returnRate":159,"successfulLaunches360":160,"newProducts360":158,"amazonNicheId":138,"title":161,"slug":162,"href":163,"leafCategoryName":164,"scrapedAt":165,"brandCount":156,"brandCountYearAgo":166,"sellerCount":167,"signals":168,"avgBsr":170,"pageQuality":160,"unitsSoldMin":171,"unitsSoldAvgMin":172,"unitsSoldAvgMax":173,"revenueMin":174,"revenueMax":175,"avgBrandAgeMonths":176,"avgSellerAgeDays":177,"top20ClickShare":158,"top20BrandShare":158,"primePct":178,"oosRate":179},55521,103391,1.6356,0.12,0.0317,0.9635,3.66,483,16.94,7.84,28.28,6,3000,1,0.0174,0,"tennis trainer","tennis-trainer","\u002Fresearch\u002Fuk\u002Fsports-outdoors\u002Ftennis-trainer","Tennis","2026-07-29T09:16:59.502603+00:00",13,8,[169],"quality_gap",24,2500,250,500,42350,50820,38,187,0.8333,0.011,{"score":181,"verdict":182,"components":183},42,"skip",[184,189,192,195,198,201,204,209,212,214],{"key":185,"score":186,"weight":187,"raw":188},"marketSize",14,0.15,55520.76,{"key":190,"score":191,"weight":187,"raw":148},"growth",40,{"key":193,"score":191,"weight":194,"raw":149},"conversion",0.1,{"key":196,"score":197,"weight":187,"raw":150},"competition",3,{"key":199,"score":200,"weight":194,"raw":150},"brandShare",9,{"key":202,"score":203,"weight":194,"raw":151},"qualityGap",98,{"key":205,"score":206,"weight":207,"raw":208},"reviewMoat",76,0.05,482.83,{"key":210,"score":211,"weight":194,"raw":159},"returns",80,{"key":213,"score":211,"weight":207,"raw":153},"avgPrice",{"key":215,"score":216,"weight":207,"raw":217},"priceRange",65,0.649706457925636,{"avgRating":219,"medianPrice":220,"medianReturnRate":221,"nichesTracked":222},4.36,12.12,0.0064,27606,{"points":224,"droppedPartialWeek":414},[225,228,231,234,237,240,243,246,249,252,255,258,261,264,267,270,273,276,279,282,285,288,291,294,297,300,303,306,309,312,315,318,321,324,327,330,333,336,339,342,345,348,351,354,357,360,363,366,369,372,375,378,381,384,387,390,393,396,399,402,405,408,411],{"week":226,"volume":227},"2025-05-18",3399,{"week":229,"volume":230},"2025-05-25",4413,{"week":232,"volume":233},"2025-06-01",2429,{"week":235,"volume":236},"2025-06-08",2133,{"week":238,"volume":239},"2025-06-15",1816,{"week":241,"volume":242},"2025-06-22",2005,{"week":244,"volume":245},"2025-06-29",1964,{"week":247,"volume":248},"2025-07-06",2653,{"week":250,"volume":251},"2025-07-13",3969,{"week":253,"volume":254},"2025-07-20",3614,{"week":256,"volume":257},"2025-07-27",2259,{"week":259,"volume":260},"2025-08-03",1847,{"week":262,"volume":263},"2025-08-10",2238,{"week":265,"volume":266},"2025-08-17",2164,{"week":268,"volume":269},"2025-08-24",1666,{"week":271,"volume":272},"2025-08-31",1537,{"week":274,"volume":275},"2025-09-07",1270,{"week":277,"volume":278},"2025-09-14",1043,{"week":280,"volume":281},"2025-09-21",949,{"week":283,"volume":284},"2025-09-28",897,{"week":286,"volume":287},"2025-10-05",1130,{"week":289,"volume":290},"2025-10-12",1374,{"week":292,"volume":293},"2025-10-19",1014,{"week":295,"volume":296},"2025-10-26",929,{"week":298,"volume":299},"2025-11-02",896,{"week":301,"volume":302},"2025-11-09",965,{"week":304,"volume":305},"2025-11-16",1271,{"week":307,"volume":308},"2025-11-23",1498,{"week":310,"volume":311},"2025-11-30",1903,{"week":313,"volume":314},"2025-12-07",2843,{"week":316,"volume":317},"2025-12-14",2460,{"week":319,"volume":320},"2025-12-21",2715,{"week":322,"volume":323},"2025-12-28",1244,{"week":325,"volume":326},"2026-01-04",786,{"week":328,"volume":329},"2026-01-11",632,{"week":331,"volume":332},"2026-01-18",708,{"week":334,"volume":335},"2026-01-25",663,{"week":337,"volume":338},"2026-02-01",829,{"week":340,"volume":341},"2026-02-08",885,{"week":343,"volume":344},"2026-02-15",742,{"week":346,"volume":347},"2026-02-22",689,{"week":349,"volume":350},"2026-03-01",858,{"week":352,"volume":353},"2026-03-08",1096,{"week":355,"volume":356},"2026-03-15",3558,{"week":358,"volume":359},"2026-03-22",3199,{"week":361,"volume":362},"2026-03-29",2608,{"week":364,"volume":365},"2026-04-05",2625,{"week":367,"volume":368},"2026-04-12",3872,{"week":370,"volume":371},"2026-04-19",3156,{"week":373,"volume":374},"2026-04-26",3043,{"week":376,"volume":377},"2026-05-03",3330,{"week":379,"volume":380},"2026-05-10",3078,{"week":382,"volume":383},"2026-05-17",2330,{"week":385,"volume":386},"2026-05-24",2352,{"week":388,"volume":389},"2026-05-31",2464,{"week":391,"volume":392},"2026-06-07",2445,{"week":394,"volume":395},"2026-06-14",2263,{"week":397,"volume":398},"2026-06-21",2383,{"week":400,"volume":401},"2026-06-28",2227,{"week":403,"volume":404},"2026-07-05",2453,{"week":406,"volume":407},"2026-07-12",2509,{"week":409,"volume":410},"2026-07-19",2792,{"week":412,"volume":413},"2026-07-26",2525,false,[416,417,418,419,420,421,422,423,424,425,426,427],0.3442346423001873,0.38817423809038687,1.1176455837062231,1.5670143487426238,1.5069236013698306,1.0787417618155744,1.4054499361320303,0.9332967627167789,0.513328030593933,0.5488746698848809,0.6450727624660089,1.1431700455304175,{"top":429,"otherBrandCount":160,"otherClickShare":160},[430,433,436,439,442,445],{"brand":431,"clickShare":432},"MOVEMATE",0.7282,{"brand":434,"clickShare":435},"TENIX",0.0742,{"brand":437,"clickShare":438},"Jognee",0.0741,{"brand":440,"clickShare":441},"Liocwocne",0.0441,{"brand":443,"clickShare":444},"BOOSTEADY",0.043,{"brand":446,"clickShare":447},"EujRcf",0.0365,[449,459,468,477,485,494],{"asin":450,"title":451,"brand":431,"imageUrl":452,"price":453,"rating":454,"reviews":455,"clickShare90":432,"clickShare360":456,"launchDate":457,"amazonUrl":458},"B08BHR6DF9","MOVEMATE Tennis-Trainer Set with Wilson Tennis Ball | Innovative ball game for outdoors in the garden in the park for children & adults | Incl. transport bag & exercise videos","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F51ESP0JEO+L.jpg",21.38,3.8,2482,0.5958,"2020-07-02","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB08BHR6DF9",{"asin":460,"title":461,"brand":434,"imageUrl":462,"price":155,"rating":463,"reviews":464,"clickShare90":435,"clickShare360":465,"launchDate":466,"amazonUrl":467},"B0D6NPSN4N","TENIX Tennis Trainer Set [with Power-Grip System] Tennis Practice Device for kids & adults | Play tennis solo in the yard park or court | Get your personal tennis buddy with rebound ball!","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F51FZmb5yU0L.jpg",4.1,267,0.1369,"2024-06-10","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB0D6NPSN4N",{"asin":469,"title":470,"brand":437,"imageUrl":471,"price":154,"rating":472,"reviews":473,"clickShare90":438,"clickShare360":474,"launchDate":475,"amazonUrl":476},"B0D7LWZ2QM","Jognee Tennis Trainer Set with 3 Rebound Balls Portable Practice Equipment for Children and Beginners","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41zv3DiYL7L.jpg",3.4,121,0.1339,"2024-07-13","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB0D7LWZ2QM",{"asin":478,"title":479,"brand":440,"imageUrl":480,"price":481,"rating":160,"reviews":160,"clickShare90":441,"clickShare360":482,"launchDate":483,"amazonUrl":484},"B0GX253MGV","2026 New Tennis Ball Training Baseboard - Solo Tennis Trainer Rebound Ball with Anti-Tangle String & Weighted Anti-Slide Base Portable Practice Equipment for Adults Beginners (Blue 1Set + 1Ball)","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F51SXq0PMzZL.jpg",10.81,0.0242,"2026-04-13","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB0GX253MGV",{"asin":486,"title":487,"brand":443,"imageUrl":488,"price":489,"rating":472,"reviews":490,"clickShare90":444,"clickShare360":491,"launchDate":492,"amazonUrl":493},"B0F6S538FQ","BOOSTEADY Premium Tennis Trainer Rebound with Metal Base Portable Solo Tennis Trainer Set with 3 Highly Elastic String Balls Practice for Adult kids and Beginners- Black","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41usxlUKtwL.jpg",23.85,20,0.0711,"2025-04-29","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB0F6S538FQ",{"asin":495,"title":496,"brand":446,"imageUrl":497,"price":498,"rating":499,"reviews":500,"clickShare90":447,"clickShare360":501,"launchDate":502,"amazonUrl":503},"B0FCXRD59X","EujRcf Tennis Trainer Rebound Balls with Rope Anti-Slide Baseboard Anti-Tangle String Portable for Children Players Beginners","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41Rf8fG7PXL.jpg",9.46,3.6,7,0.0381,"2025-06-12","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB0FCXRD59X",{"love":505,"hate":530,"returnReasons":576},[506,512,518,522,526],{"topic":507,"percentOfMentions":508,"verbatims":509},"Quality-Overall",0.25,[510,511],"well made","Great quality ; would recommend",{"topic":513,"percentOfMentions":514,"verbatims":515},"Ease Of Use",0.16670000000000001,[516,517],"it is fun to use and it works","easy for them to put in a backpack",{"topic":519,"percentOfMentions":514,"verbatims":520},"Efficiency",[521],"Works Great",{"topic":523,"percentOfMentions":514,"verbatims":524},"Fun\u002FEntertainment Experience",[525],"grankidds love it",{"topic":527,"percentOfMentions":514,"verbatims":528},"Rubber Quality",[529],"Sturdy with rubber base",[531,537,544,550,554,559,564,569,573],{"topic":507,"percentOfMentions":532,"verbatims":533},0.20370000000000002,[534,535,536],"and a cheap quality plastic container","Low quality","The quality is very bad",{"topic":538,"percentOfMentions":539,"verbatims":540},"Strap\u002FString Quality",0.1481,[541,542,543],"The ball is detached from the string","the string snapped from the ball","String snapped after 1st play",{"topic":545,"percentOfMentions":546,"verbatims":547},"Stretchability\u002FExpandability\u002FElasticity",0.11109999999999999,[548,549],"Elastic cord snapped","The elastic is so long",{"topic":551,"percentOfMentions":546,"verbatims":552},"Rope\u002FWire Tangling",[553],"gets tangled quickly",{"topic":555,"percentOfMentions":546,"verbatims":556},"Value For Money",[557,558],"I just think the price is too much still though","Waste of money",{"topic":560,"percentOfMentions":561,"verbatims":562},"Durability",0.0926,[563,543],"Thing snapped after 3 uses",{"topic":565,"percentOfMentions":566,"verbatims":567},"Functionality-Overall",0.0556,[568],"doesn't work",{"topic":570,"percentOfMentions":566,"verbatims":571},"Add-Ons\u002FAttachments",[572],"Broken at the ball attachment",{"topic":513,"percentOfMentions":566,"verbatims":574},[575],"I even struggle",[577,579,581,584,585,588,590,593,595,596],{"reason":565,"pct":578},0.2944,{"reason":507,"pct":580},0.16940000000000002,{"reason":582,"pct":583},"Defective Material\u002FParts",0.06849999999999999,{"reason":538,"pct":583},{"reason":586,"pct":587},"Advertised Vs Actual Product",0.0645,{"reason":560,"pct":589},0.0565,{"reason":591,"pct":592},"Leak-Proof",0.0323,{"reason":594,"pct":592},"Size-Overall",{"reason":545,"pct":592},{"reason":555,"pct":597},0.0282,[599,603,608,613,618,623,628,633,638,643],{"term":161,"volume":600,"growthQoq":601,"conversionRate":602},30310,0.1818,0.0184,{"term":604,"volume":605,"growthQoq":606,"conversionRate":607},"tennis trainer rebound ball",7354,0.6301,0.0172,{"term":609,"volume":610,"growthQoq":611,"conversionRate":612},"tennis rebounder",7567,0.558,0.0095,{"term":614,"volume":615,"growthQoq":616,"conversionRate":617},"tennis practice device",7954,-0.0406,0.0152,{"term":619,"volume":620,"growthQoq":621,"conversionRate":622},"tennis buddy",10739,-0.2384,0.0258,{"term":624,"volume":625,"growthQoq":626,"conversionRate":627},"tennis practice",5091,0.2839,0.0118,{"term":629,"volume":630,"growthQoq":631,"conversionRate":632},"tennis training equipment",6218,0.1468,0.0051,{"term":634,"volume":635,"growthQoq":636,"conversionRate":637},"padel trainer",4514,0.5456,0.004,{"term":639,"volume":640,"growthQoq":641,"conversionRate":642},"tennis ball on string",4399,0.1028,0.009,{"term":644,"volume":645,"growthQoq":646,"conversionRate":647},"tennis game",4096,0.7816,0.0085,[649,656,661,666,671,676],{"title":650,"href":651,"score":652,"verdict":653,"marketSize":654,"growth90":655},"snorkel set adults","\u002Fresearch\u002Fuk\u002Fsports-outdoors\u002Fsnorkel-set-adults",67,"watch",500409.56,1.1241,{"title":657,"href":658,"score":652,"verdict":653,"marketSize":659,"growth90":660},"dry bag","\u002Fresearch\u002Fuk\u002Fsports-outdoors\u002Fdry-bag",454363.63,0.5274,{"title":662,"href":663,"score":652,"verdict":653,"marketSize":664,"growth90":665},"stunt scooter for kids ages 8-12","\u002Fresearch\u002Fuk\u002Fsports-outdoors\u002Fstunt-scooter-for-kids-ages-8-12",173900.84,0.4116,{"title":667,"href":668,"score":652,"verdict":653,"marketSize":669,"growth90":670},"kids bike","\u002Fresearch\u002Fuk\u002Fsports-outdoors\u002Fkids-bike",98456.77,0.4765,{"title":672,"href":673,"score":652,"verdict":653,"marketSize":674,"growth90":675},"hula hoop kids","\u002Fresearch\u002Fuk\u002Fsports-outdoors\u002Fhula-hoop-kids",53508.65,0.5596,{"title":677,"href":678,"score":679,"verdict":653,"marketSize":680,"growth90":681},"gymnastics bar","\u002Fresearch\u002Fuk\u002Fsports-outdoors\u002Fgymnastics-bar",68,572201.1,0.4409]