Week 4 of the 2020 XFL schedule concludes on Sunday. The Houston Roughnecks put their undefeated mark on the line against the Dallas Renegades at 4 p.m. ET, while the DC Defenders visit the winless Tampa Bay Vipers at 7 p.m. ET. The Roughnecks needed to overcome a fourth-quarter deficit last week to remain perfect, while the Defenders fell from the unbeaten ranks in their first road game of the season.

Can P.J. Walker and Cam Phillips continue to connect at an amazing rate and lead Houston to another victory as 1.5-point favorites in the latest Week 4 XFL odds? And will Cardale Jones bounce back from a dismal performance to get DC back on track as a 1.5-point favorite in the current XFL spreads? All of the Week 4 XFL lines are listed below, and SportsLine's pro football expert R.J. White, who is an astounding 13-1 in against-the-spread picks this season, has all the XFL betting advice and predictions you need to make the best Week 4 XFL picks now.

Winning XFL picks from a proven expert

Not only is White on fire against the spread, he's often cashing with ease. Last Sunday for instance, White nailed the XFL doubleheader by a combined 49 points. He had St. Louis -9 (won 29-9) and Los Angeles +8 (won 39-9), and anyone who followed his bets never broke a sweat. 

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. He also has his finger on the pulse of the XFL, going 13-1, including 2-0 on Saturday, and anyone who has followed him is way up. Now, White has examined the latest Week 4 XFL odds and lines and his predictions are in.

Week 4 XFL picks to target

One of White's strongest XFL picks for Week 4 is the under (44.5) hitting when the Vipers vie for their first victory against the visiting Defenders.

Tampa Bay has recorded just one touchdown over its first two games, and that came on a 78-yard interception return by cornerback Tarvarus McFadden, but the offense produced three scores in last week's 34-27 loss to Houston. However, the team's quarterback situation remains fluid, as Aaron Murray (foot) hasn't played since the season-opener and Quinton Flowers, who doubles as a running back and rushed for the first offensive TD in franchise history last week, left the team for personal reasons on Wednesday, leaving Taylor Cornelius (32-of-58, 347 yards, one TD, three interceptions) as the potential starter against DC.

The Defenders scored 58 points over their first two contests, but were unable to hit double-digits in last week's shocking 39-9 setback at Los Angeles. DC was kept out of the end zone until Nick Brossette ran in from 38 yards with 7:33 remaining in the fourth quarter, while Jones threw for only 103 yards after amassing at least 235 in his first two outings. The former Buffalo Bills quarterback was picked off four times by the Wildcats.

How to make Week 4 XFL predictions

White also has made the call against the spread and on the over-under for every other game on Sunday's Week 4 XFL schedule. He's also targeting a line he knows is way off, so you need to see his XFL picks before locking in any of your own. Get every pick for every game at SportsLine. 

Who should you back against the spread and on the total in every Week 4 XFL game? And which line is way off? Check out the latest XFL odds below, then visit SportsLine to see their Week 4 XFL cheat sheet, all from the pro football expert who is 13-1 on XFL against the spread picks.

Week 4 XFL odds

Houston Roughnecks at Dallas Renegades (+1.5, 50)
DC Defenders at Tampa Bay Vipers (+1.5, 44.5)