The surging Houston Astros will look to keep their momentum going Monday when they visit the middling Seattle Mariners to kick off a three-game series. First pitch from T-Mobile Park in Seattle is set for 10:10 p.m. ET and the Astros (77-53) have won seven of their last 10 to gain some breathing room in the AL West, as they now lead the division by 5.5 games over the Oakland Athletics. Houston had won four straight before dropping a 13-2 decision Sunday at Texas in the final of a three-game series. The Mariners (70-61) swept a two-game set in Oakland before returning home to lose three of four in a weekend series against the Kansas City Royals.

Houston is a -157 sportsbook favorite (risk $157 to win $100), while Seattle Is offered at +147 in the latest Caesars Sportsbook odds for Astros vs. Mariners. Other contests on the 11-game MLB slate include the San Diego Padres (-190) visiting the Arizona Diamondbacks (+170) with first pitch set for 9:40 p.m. ET and the Colorado Rockies (-140) kicking off a three-game set at the Texas Rangers (+130) in an 8:05 p.m. ET start. Before you make any MLB picks on those games or any others on Monday, you need to see the MLB predictions and betting advice from the SportsLine Projection Model.

This model, which simulates every game 10,000 times, is 176-142 on top-rated MLB money-line picks through 22 weeks in the 2021 season, returning almost $1,000. It also had a banner 2019 season, the league's last full schedule, returning more than $1,400 on its top-rated money-line and run-line picks. Anyone following it has seen some huge returns.

Now, the model has zeroed in on the latest MLB lines for Monday and posted its best bets for the evening games. Parlaying these four MLB picks would result in a whopping payout of 19-1. You can see these selections at SportsLine.

Top MLB picks for Monday, Aug. 30

After simulating every MLB game 10,000 times, the model is confident that the Colorado Rockies (-140) will topple the Texas Rangers (+130) in an interleague battle. The model sees the Rockies winning by nearly two runs as they pick apart both Texas' starting pitcher and bullpen.

Colorado starter German Marquez (11-9. 4.02 ERA) had one of his best starts of the season in June versus the Rangers. He logged 7.0 innings, allowed just one earned run and struck out seven batters. The Venezuelan righty has dominated the current Rangers lineup as they are just 5-for-24 (.187 BA) against him with a .228 slugging percentage.

Meanwhile, the Rangers will send A.J. Alexy to the mound in what will be his MLB debut. Alexy posted a 13-19 record across five seasons in the minors, and he went 3-1 in 2021. He will have to deal with a Rockies' lineup that ranks second in the National League in batting average (.250) and sixth in OPS (.730). Alexy will also have to deal with C.J. Cron who leads the Rockies with 24 home runs and 76 RBI. The former Angel has feasted off Rangers' pitching throughout his career with a .296/.341/.490 split across 72 games.

Featured Game | Texas Rangers vs. Colorado Rockies

How to make MLB predictions, parlays for Monday, Aug. 30

The model has locked in three other MLB best bets, including two underdogs to pull off stunning upsets. You can only see the MLB best bets at SportsLine.

So which MLB picks should you make on Monday for a shot at a massive return of 19-1? And which surprising underdogs do you need to be all over? Visit SportsLine now to see Monday's MLB picks, all from the projection model that's on a roll in 2021, and find out.