Stars Fallen Ash Osaka and alcar is out cner and swek dominate two rounds of singles play are complete at the 2024 US Open leaving just 32 women and 32 men with a shot at the Queen's Crown day four was packed with action at the USA Billy Jean King national tennis center including continued doubles play top Single Seeds janx Sinner and IGA swotch who overcame tough first round challenges stepped up their game in their second matches at Arthur Ash Stadium however the day saw two top 10 seeds bow out early Hubert herot was defeated by Jordan Thompson and Elena racho withdrew before her second round match but the biggest headlines came under the lights as Naomi Osaka and Carlos alcaras both made shock exits during a thrilling evening session on ash Carolina muchova and bodic Van desan schul were the ones to deliver the upsets let's take a closer look at Thursday's top stories from around the grounds Osaka alcara knocked out in Ash a night brimming with star power ended with the two Ash Headliners heading home karolina muchova showcased the form that took her to last year's semi-finals defeating Naomi Osaka 6 to3 7 to 65 mucha's all Court aggression left Osaka struggling to control the match especially after failing to serve out the second set at 5 to four I know she's an amazing player and I had to bring my aame OVA said postmatch the energy and the big Court definitely helped me meanwhile bodic van Dean shul delivered a stunning straight sets victory over Carlos alcaras winning 6 to1 7 to5 6 to4 alcaras struggled to maintain control despite fighting back from early breaks in the second and third sets with the score line appearing closer than the match felt to seed shine early in Ash Janik Sinner and EA swotch headlining the ash day session delivered dominant performances CER overcame American Alex mikkelson 6 to4 6 to 0 6-2 building on his recent win against the same opponent in Cincinnati now on a six-match winning streak CER is fully focused on his New York campaign swch the 2022 US Open champion breezed past Japanese qualifier Ena Shi bahara 6 to0 6 to1 dropping just six points on serve the Polish star used her off day to fine-tune her game and is steadily improving as the tournament progresses pugula and MedVet stay steady in Lewis Armstrong Stadium Jessica pugula and denil medvedov advanced with characteristic consistency pugula defeated Sophia Kennan 7 to 64 6 to3 while mvv dispatched Fabian maroon 6 to3 6-2 7 to 65 both players have looked solid throughout the tournament with Pula overcoming two American opponents and medv tightening up his game after a four set opener reigning doubles Champs Advance defending champions in both the men's and women's doubles draws made winning starts on Thursday rajie RAM and Joe Salsbury were pushed to the brink by luchano darder and for Nando romoli But ultimately prevailed in a third set Thriller meanwhile Gabriela dombroski and Aaron routliffe Cruis through their first round match with ease that wraps up our coverage of day four at the 2024 US Open with major upsets shaking up the singles draws and the top seeds continuing their strong performances the tournament is heating up stay tuned as we follow the action and see which players rise to the occasion in the coming rounds for now from the USA Billy Jean King national tennis center this is Emily o signing off see you tomorrow for more tennis excitement