The U.S. Open women's tennis tournament, the final major of 2018, begins Monday. Serena Williams, who won the 2017 Australian Open pregnant, is the No. 17 seed after taking time off, but is the favorite among oddsmakers at 5-1. Top-seeded Simona Halep has 13-2 U.S. Open odds and Angelique Kerber, the No. 4 seed, is 15-2.

Before you pick the winner, you have to hear what veteran handicapper Micah Roberts is picking. Roberts has worked in the Las Vegas sportsbook industry for 20 years, including a 13-year run as Station Casinos' book director. Armed with an unmatched network of sources, Roberts has covered the Las Vegas sports betting industry for VegasInsider.com, Gaming Today, and Sporting News. Since joining SportsLine in 2016, he's also crushed it picking events, including tennis.

You'll want to hear what an expert who's broken down the field is saying about it. After all, the winner last year, Sloane Stephens, was a mammoth 40-1 longshot before hoisting the trophy.

Now, Roberts has analyzed the field and potential matchups at the 2018 U.S. Open women's tournament and locked in his bets. We can tell you he's not going with Williams, the big favorite. Instead, Roberts is sees massive value in a trio of competitors -- any of them would offer a hefty payout.

So who wins the 2018 U.S. Open? And which longshots are worth backing at the final major of 2018? ... Join SportsLine here to see Micah Roberts' detailed U.S. Open women's championship picks, all from the acclaimed expert who has worked in the sportsbook industry for 20 years and knows what the oddsmakers are thinking!