The U.S. Open quarterfinals continue on Wednesday when No. 13 Belinda Bencic plays No. 23 Donna Vekic. Also, No. 15 Bianca Andreescu faces No. 25 Elise Martens. Before you make any 2019 U.S. Open picks, you need to see who Gavin Mair picked.

Not only did the famed international tennis expert call Naomi Osaka winning last year's U.S. Open at 32-1, but $100 bettors who have tailed his U.S. Open picks that past two years are up $4,450. For Tuesday's quarterfinals, Mair predicted Serena Williams and Elina Svitolina would win in straight sets, and both crushed their competition.

Now, Mair has broken down Wednesday's quarterfinals and released his best bets on each match. He is confident he has both Wednesday winners, and he's recommending one prop bet that pays more than 5-2! You ABSOLUTELY need to see Mair's picks and analysis before locking in your U.S. Open quarterfinal picks.

Who wins Bencic-Vakec and Andreescu-Mertens? And exactly how many sets does each match last? ... Join SportsLine right now to see Gavin Mair's best bets for the U.S. Open women's quarterfinals, all from the acclaimed expert who called Naomi Osaka winning last year's U.S. Open at 32-1! -- Use promo code TENNIS to get your first month of SportsLine for a buck!