The 2019 U.S. Open women's final is set for 4 p.m. ET Saturday at Arthur Ashe Stadium in Flushing, N.Y. American Serena Williams is a -320 favorite over Canadian teen Bianca Andreescu, who's getting +260 as the underdog. Before you make any picks, you need to see who Gavin Mair is backing.

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 the past two years are up $4,450. And amazingly, Mair called all four women's quarterfinal winners! Moreover, before this tournament, Mair recommended backing Andreescu as a 20-1 long shot who could very well win it all.

Now, Mair has broken down the final like only he can and released two best bets, including a prop that pays nearly 5-1! You ABSOLUTELY need to see Mair's picks and analysis before locking in your U.S. Open final picks.

Who wins Williams vs. Andreescu in the women's final? And what best bet should you make for a nearly 5-1 payout? ... Join SportsLine right now to see Gavin Mair's U.S. Open women's final picks, all from the acclaimed expert who called all four quarterfinals correctly! -- Use promo code TENNIS to get your first month of SportsLine for a buck!