The Tampa Bay Vipers visit the New York Guardians in the 2020 XFL season opener for both teams on Sunday. Kickoff from MetLife Stadium in East Rutherford, N.J. is at 2 p.m. ET. Tampa Bay is a five-point favorite, while the over-under is 53.

Before you make any Vipers vs. Guardians picks, you NEED to see what SportsLine's pro football expert R.J. White has to say. He went 2-0 on his XFL picks Saturday.

And twice recently, White cashed big in the world's most prestigious handicapping tournament, the Westgate Las Vegas SuperContest. He tied for 18th out of 2,748 contestants in 2017 with a 52-29-4 mark against the spread. It wasn't a fluke, either, as he also cashed big-time in the 2015 SuperContest.

White consistently crushes the NFL for SportsLine members. He has returned over $2,300 to $100 players on against-the-spread picks over the last three years. Anyone who has followed him is WAY up.

Now White has studied the Vipers vs. Guardians XFL matchup. He has found a major mismatch that has him going BIG on one side. You ABSOLUTELY need to see it before locking in your own picks.

Who wins Vipers vs. Guardians? And what major mismatch makes one side of the spread a MUST-BACK? ... Join SportsLine right now to see which side of the Vipers vs. Guardians spread you need to back on Sunday, all from the acclaimed NFL expert who has crushed the world's most prestigious handicapping tournament!