Czech teenager Marketa Vondrousova looks to cap her Cinderella run when she plays No. 8 seed Ashleigh Barty in the 2019 French Open final Saturday morning at 8 a.m. ET. Barty is a -156 favorite, with Vondrousova getting +132 as the underdog. Barty is favored by 2.5 games, while the over-under on total games is 25.

Before you make your picks, you NEED to see what Gavin Mair picked.

Before the 2019 French Open, Mair recommended betting Vondrousova at 60-1 to win the title -- one of only three players he backed in the entire field. Now the massive long shot is one win away from returning SportsLine members a colossal score!

Mair knows these players and their tendencies better than anyone covering the tour, and he just locked in a trio of best bets on the French Open final. Not only is he sharing who to back and why, he's also going big on how long the match -- and the first set -- lasts. Don't do anything until you see how Mair is betting it.

So who wins the French Open final? And exactly how long does it last? ... Join SportsLine right now to see Gavin Mair's picks for Barty-Vondrousova, all from the acclaimed expert who backed Vondrousova at 60-1 before the French Open started!