Best betting promos and sportsbooks for MLB prop bets [August 18, 2026]

The Houston Astros face off against George Klassen and the Los Angeles Angels underwhelming defense.

After losing their last two games in a row, the Houston Astros odds of winning the AL West have steadily declined, now possessing just a two game lead over the Texas Rangers for first.

Fortunately for the Astros, they will have a great opportunity to round back into form against the Los Angeles Angels George Klassen by taking advantage of an arm who is incapable of keeping opposing runners off the bases.

With fifteen games taking the field on Tuesday night, there are an abundance of prop bets and markets to groom through which you can read a detailed breakdown of them below.

Best betting promos and sportsbooks for MLB prop bets

Find the best promos and sportsbooks to use for today’s MLB prop bets.

Los Angeles Angels vs Houston Astros (8:10pm, EST)

Houston Astros Team Total Over 4.5 (-135) at BetMGM Sportsbook

After a slow start to the season, the Houston Astros bats have started to catch fire, climbing into the top half of the board in Hit Rate, Runs Scored, RBIs, and in OPS.

Their resurgence on offense helps reduce the amount of negative variance they have to combat against, making it easier to pull away on the scoreboard.

With George Klassen getting the start for the Los Angeles Angels, the Astros will be able to consistently get into scoring position by relentlessly attacking an arm who is averaging an ERA of 5.52, a WHIP of 2.114, and a FIP of 6.22.

Especially with Klassen’s outfield struggling to hold their own in coverage, fielding a group who ranks in the bottom ten in Fielding Percentage.

George Klassen Under 15.5 Total Outs (-175) at BetMGM Sportsbook

With the Astros getting on base at a high rate while stringing together their Hits, the length of Klassen’s leash on the mound will drastically shrink, forcing the Angels pitching staff to pull him early on in his start which will keep him under the total on his Outs prop.

If the total on Klassen’s Outs prop crosses through the key number of 15, then reduce the size of your wager.

Seattle Mariners vs Milwaukee Brewers (7:40pm, EST)

Kyle Harrison Over 5.5 Strikeouts (-150) at BetMGM Sportsbook

When given the start, Kyle Harrison has been a steady source of production in the Milwaukee Brewers rotation, averaging an ERA of 3.47 and a FIP of 3.35.

Harrison’s success on the mound stems from his aggression, giving up less than one Hit Against while generating more than one Strikeout per Inning Pitched.

In a favorable matchup against the Seattle Mariners, Harrison will be able to generate a high volume of K’s by exploiting a lineup who ranks well below league average in Hit Rate, Strikeout Rate, and in On Base Percentage.

For some more exposure, escalator bet Harrison’s Strikeout prop by placing smaller wagers on his alternate overs at the best available odds across multiple sportsbooks.

Cal Raleigh Under 0.5 Total Hit (-115) at BetMGM Sportsbook

After rivaling Aaron Judge for the AL MVP award in 2025, Cal Raleigh has been unable to carry over his momentum into this season, generating less than one Hit per game and a .158 Batting Average.

With Harrison creating Whiffs at a high rate while painting the strike zone, Raleigh will continue to struggle with making contact and be held without a Hit against the Brewers pitcher.

Atlanta Braves vs Minnesota Twins (7:40pm, EST)

Atlanta Braves Team Total Over 4.5 (-110) at BetMGM Sportsbook

With health back on their side, the Atlanta Braves have been able to reclaim the top spot in the NL East, possessing a 7.5 game lead for first in the division standings.

Their turnaround on offense has turned them back into a well rounded contender, fielding a lineup who ranks in the top-10 in Hit Rate, RBIs, and in Runs Scored.

Heading into Tuesday night’s contest against the Minnesota Twins, the Braves will be able to thrive on offense while battling it out against Zebby Matthews who is averaging an ERA of 5.34 and a WHIP of 1.352.

The Twins lack of production on defense will also widen the width of the Braves gaps at multiple levels of the field, surrounding him with a unit who resides near the bottom of the board in Defensive Efficiency.

About the author

Kody Malstrom

Kody Malstrom is a professional sports bettor and sports betting journalist with six years of experience covering a vast majority of sports. He covers football, basketball, hockey, baseball, and the UFC in written and video form.

Born and raised in Michigan, Kody is a Detroit sports fan who spends all of his Sundays in the fall rooting for the Detroit Lions and Saturdays watching as much College Football as possible. In the winter, he shifts his focus to the Detroit Red Wings and Pistons while simultaneously rooting for his North Carolina Tar Heels.

When he is not staring at betting markets, you can find Kody at the beach or snowboarding down a mountain, depending on the time of the year.

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