Coco Gauff\u2019s US Open campaign gets underway on Tuesday night, and the build-up to her round-one match has been dominated by one huge talking point.<\/p>\n
It was confirmed last week that Gauff had split with coach Matt Daly after an 11-month partnership<\/a>, the pair parting ways with just a week until the final major tournament of 2025.<\/p>\n Changing coaches just days before a Grand Slam is not a move that many would even consider, but past coaching alterations have worked for the 21-year-old in the past.<\/p>\n And, with new coach Gavin MacMillan having previously fixed Aryna Sabalenka\u2019s serving struggles<\/a>, she may have found the right person to banish her own service woes once and for all.<\/p>\n Gauff\u2019s<\/a> partnership with Daly, which began after the US Open last year, should ultimately be considered a success.<\/p>\n The American won her second Grand Slam singles title at the French Open this spring<\/a>, and triumphed at the China Open and WTA Finals at the tail end of 2024.<\/p>\n However, when you dig further into her service numbers, the reason for Gauff\u2019s sudden decision becomes more than clear.<\/p>\n No woman served more double faults than Gauff on the WTA Tour last year, and the American looks set to top that unfortunate list once again in 2025.<\/p>\n Victoria Mboko\u2019s injury nightmare is a concern for tennis legend after thumping US Open exit<\/a><\/p>\n Iga Swiatek\u2019s Asia swing could decide battle for WTA Rankings No 1 spot<\/a><\/p>\n The American has hit a staggering 320 double faults in 2025, heading into the start of her US Open campaign, an average of 6.8 double faults across her 47 matches so far this season.<\/p>\n While that may not sound too alarming on paper, it stands out significantly across the rest of the WTA field.<\/p>\n Gauff has served 95 more double faults than Alycia Parks (225), who sits in second place in the double fault standings this season.<\/p>\n In third place, Ekaterina Alexandrova (215) is 105 behind, with Jelena Ostapenko (211) 109 double faults behind in fourth.<\/p>\n In contrast to Gauff, world No 1 Sabalenka<\/a> has served just 122 double faults across 61 matches this year, an average of just two double faults per match.<\/p>\n Meanwhile, world No 2 Iga Swiatek<\/a> has served 175 double faults ahead of action in New York, an average of 2.87 per match this season.<\/p>\n Sabalenka has an impressive 217 aces compared to her 122 double faults, while Swiatek\u2019s 180 aces are just ahead of her 175 double faults.<\/p>\n However, Gauff has served only 138 aces this year, giving her a -182 differential in aces to double faults this season.<\/p>\n Compared to her two main rivals, Gauff\u2019s first serve and first serve points win percentage are pretty level at the top of the game.<\/p>\n The American has landed 60% of first serves in play this season, and has won 69.5% of those points.<\/p>\n Sabalenka has a 62.4% first-serve percentage for 2025, and her 68% of points won is slightly less than Gauff, with Swiatek holding a 62% first-serve percentage and a 69.3% points won record for 2025.<\/p>\n However, while she is narrowly ahead of both Sabalenka and Swiatek in terms of first serve points won, her second-serve stats are alarming.<\/p>\n The world No 3 has won just 42.7% points on her second serve in 2025, compared to 50.5% for Sabalenka and 50.3% for Swiatek.<\/p>\n Gauff has also held in 68.7% of her service games, which puts her considerably behind Sabalenka on 76.6% and Swiatek on an impressive 78.1%.<\/p>\n The fact that Gauff has been able to win as much as she has in recent months and remain high in the WTA Rankings is a testament to how strong other areas in her game are.<\/p>\n However, there can be no denying that a huge improvement is needed in regards to serving, with this proving an obvious weakness in her game.<\/p>\n If the 21-year-old can fix her service struggles, you would think she could achieve even greater success than she already has.<\/p>\n Read Next<\/strong>: The 7 men to defend US Open title: Can Jannik Sinner end 17-year wait for successful defence?<\/a><\/p>\n The post Alarming Coco Gauff service stats highlight why she made big coaching change<\/a> appeared first on Tennis365<\/a>.<\/p>","protected":false},"excerpt":{"rendered":" Coco Gauff\u2019s US Open campaign gets underway on Tuesday night, and the build-up to her round-one match has been dominated by one huge talking point. It was confirmed last week that Gauff had split with coach Matt Daly after an 11-month partnership, the pair parting ways with just a week until the final major tournament […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-932","post","type-post","status-publish","format-standard","hentry","category-articles"],"_links":{"self":[{"href":"https:\/\/tennisring.com\/index.php?rest_route=\/wp\/v2\/posts\/932","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tennisring.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tennisring.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tennisring.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tennisring.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=932"}],"version-history":[{"count":0,"href":"https:\/\/tennisring.com\/index.php?rest_route=\/wp\/v2\/posts\/932\/revisions"}],"wp:attachment":[{"href":"https:\/\/tennisring.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=932"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tennisring.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=932"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tennisring.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=932"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Alarming statistics<\/h2>\n
Tennis News<\/h2>\n