Flushing Meadows will host the best and brightest in the tennis world when the 2021 U.S. Open begins on Aug. 30. Ashleigh Barty is the pre-tournament favorite in the 2021 U.S. Open odds from Caesars Sportsbook at +350. Defending champion Naomi Osaka is +450, followed by Aryna Sabalenka at +1000. 

Before you bet, you NEED to see whom Gavin Mair picked. 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. women's odds from Caesars Sportsbook and released his coveted best bets.

In a huge shocker, Mair is fading Osaka, because of the price and the strength of the field.

"Osaka is a proven commodity capable of adding to her Grand Slam collection," Mair told SportsLine. "But there is plenty of reason to consider her starting price an unattractive risk."

Mair has locked in his best bets, and they include two long shots who would bring HUGE returns of 20-1 or higher. He's especially high on an enormous long shot who "has long been considered a player of high potential." You NEED to see his picks and analysis before you make any 2021 U.S. Open picks of your own.

Who wins U.S. Open 2021? And which long shots are must-backs? ... Join SportsLine right now to see Gavin Mair's best bets for the 2021 U.S. Open women's bracket, all from the acclaimed expert who has called long-shot winners of three Grand Slam women's titles since 2017!