Since then, Swiatek has been working with Wim Fissette<\/a>, but it has not been completely plain sailing.<\/p>\n However, this partnership appears to be gelling now, with Fissette helping Swiatek win Wimbledon<\/a> for the first time after improving one element of her game in particular.<\/p>\n Serving has been seen as a potential weakness for Swiatek<\/a> over the years, despite her Grand Slam success since the age of 19.<\/p>\n This is something that Fissette set out to improve at the start of his tenure coaching Swiatek<\/a>, and it appears to have worked.<\/p>\n Swiatek now has a flatter serve, which has enabled her to consistently improve the speed of it, something she has admitted she never thought was possible.<\/p>\n After beating Sorana Cirstea to reach the Cincinnati Open<\/a> quarterfinals, Swiatek revealed in her post-match press conference that she now has belief in her serve.<\/p>\n \u201cHonestly I am always the kind of player who needs to see the proof, if the serves are going to go in I will be convinced,\u201d said Swiatek. <\/p>\n \u201cI would say maybe at the beginning of the season and when I started working with Wim I did not believe I could serve 185kmph and 180kmph consistently so I think he helped me with reaching these higher speeds.<\/p>\n \u201cWe were working a lot of hours on precision, so I think I used it pretty well at the Australian Open and at Wimbledon. Now I need to find it again with the balls here. But I think I am more brave with my decisions and I wouldn\u2019t say there are any hurdles, I just needed to believe it.\u201d<\/p>\n Iga Swiatek\u2019s serving statistics at the Cincinnati Open this year<\/p>\n Despite Swiatek increasing the speed of her serve since hiring Fissette, it has not been noticeably more effective at the Cincinnati Open this year.<\/p>\n The world number three has admitted that she is still trying to adapt to the balls during the North American hard court swing.<\/p>\n At the Cincinnati Open this year, Swiatek has hit more double faults than she has aces and has only just hit more than half of her first serves in the court.<\/p>\n![\"Iga](\"https:\/\/www.newsbeep.com\/ca\/wp-content\/uploads\/2025\/08\/GettyImages-2227452977-1024x683.jpg\")
Photo by David Kirouac\/Icon Sportswire via Getty ImagesIga Swiatek explains how Wim Fissette has helped improve her serve<\/p>\n