The women's tennis action has been wildly entertaining at the 2021 U.S. Open. Though some of the big pre-tournament favorites have been ousted, burgeoning young stars are coming to the forefront. One such breakout is Leylah Annie Fernandez, who will make an appearance in the semifinals on Thursday at 7 p.m. ET. Fernandez will face Aryna Sabalenka, the No. 2 seed in the field, and the winner will advance to the grand slam final.

The latest Fernandez vs. Sabalenka odds from Caesars Sportsbook list Sabalenka as the -350 favorite (risk $350 to win $100), while Fernandez is going off as the +260 underdog. The Over-Under for total games is set at 20.5. 

Before you make any Fernandez vs. Sabalenka 2021 U.S. Open women's semifinals picks, you MUST see what Gavin Mair has to say.

A renowned women's tennis handicapper, Mair has cashed in huge at previous U.S. Open tournaments. He called Naomi Osaka (32-1) winning the 2018 U.S. Open and Bianca Andreescu (20-1) winning the 2019 U.S. Open. 

He also held a position on semifinalist Belinda Bencic (50-1) at the 2019 edition, and he nailed a +550 position on the second set of the 2021 Wimbledon final.

Now, Mair has broken down the latest 2021 U.S. Open women's semifinals odds and released his coveted best bets for Fernandez vs. Sabalenka. He's locked in a pair of best bets, and they both bring plus-money return! You ABSOLUTELY need to see all of Mair's picks and analysis of Fernandez vs. Sabalenka and the 2021 U.S. Open before you bet.

So who wins the Fernandez vs. Sabalenka semifinal matchup? And which pick could lead to a BIG return? ... Join SportsLine right now to see Gavin Mair's top 2021 U.S. Open semifinal picks, all from the acclaimed expert who has crushed his tennis Grand Slam picks!