MLB Tuesday parlay at mega (+910 odds) today 9/20: Mariners take care of business

Luis Castillo of the Seattle Mariners
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Caleb Wilfinger

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Deputy Editor for Pickswise with years of experience handicapping and giving out winning picks. Lover of all US sports and Southampton FC. For Caleb Wilfinger media enquiries, please email contact@pickswise.com.
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After a quieter Monday around Major League Baseball, Tuesday has a much larger slate. With that comes plenty of opportunities on the card to create a 3-team mega parlay. This parlay could pay out at over 9/1 odds at DraftKings Sportsbook, so be sure to check this out.

But before we dive in, be sure to read our MLB picks for every MLB side and total today.

Let’s get into our mega parlay for Tuesday and break down each of the legs one by one.

Seattle Mariners -1.5 (-110) over Oakland Athletics

To start off this mega parlay, we’re going with the Mariners on the run line. Seattle has won 7 of the last 10 meetings against Oakland, and the Mariners are simply much better on all levels. Even though they’re not 100% healthy, this is still a deeper team than the A’s. Furthermore, this is a great spot for Luis Castillo. The Seattle ace has held opponents scoreless over 6.0 innings in 2 of his last 3 outings.

Oakland is putrid at home, especially at the plate, so I don’t expect Castillo’s good form to change. Castillo has also recorded 17 strikeouts across his last 2 appearances, as his stuff looks as good as ever. On the other side, A’s starter JP Sears has surrendered 11 runs over his last 6 innings pitched, making him a prime target for the Mariners offense to bounce back. Seattle should win and cover this run line fairly easily.

Read our full Seattle Mariners vs Oakland Athletics predictions

Houston Astros ML (+116) over Tampa Bay Rays

For the second leg of our parlay, we’re going with the Astros on the money line. Houston is easily one of baseball’s best teams and its winning ways have continued deep into September. The Astros are running away with the American League’s best record thanks to their rock-solid hitting and excellent starting pitching. Christian Javier is a standout performer in the rotation, as he’s allowed just 14 runs over his last 10 starts.

Houston’s lineup has a difficult matchup against Shane McClanahan, but the Astros should only need to provide Javier with a couple of runs to ensure their bullpen comes in with a lead. The Astros come into this matchup having won 8 of their last 9 games, and I’ll happily grab Houston as an underdog in the series opener.

Read our full Houston Astros vs Tampa Bay Rays predictions

Toronto Blue Jays -1.5 (+145) over Philadelphia Phillies

The final leg of this parlay sees us backing the Blue Jays on the run line. While Kevin Gausman and Alex Manoah are rated higher by most baseball fans, Ross Stripling has looked like Toronto’s ace lately. Stripling holds a 2.80 ERA since the all-star break and has been the Blue Jays’ most reliable starter. In fact, he’s tossed 6 innings or more while allowing 3 runs or less in 6 consecutive starts now. Toronto has won 8 of Stripling’s last 9 starts, and that’s because of his incredible consistency of late.

On the other side, the same can’t be said for Kyle Gibson. Gibson has allowed 12 runs and 20 hits in his last 12.2 innings, which is an issue considering the Phillies bullpen hasn’t been much better either. As long as Toronto holds the lead into the later innings, the Blue Jays should win this contest by at least 2 runs.

Read our full Toronto Blue Jays vs Philadelphia Phillies predictions

Today’s MLB mega parlay (9/20)

Seattle Mariners -1.5 (-110)

Houston Astros ML (+116)

Toronto Blue Jays -1.5 (+145)

Best parlay odds: +910 at DraftKings Sportsbook

Odds available at time of publishing.

Lock in our MLB YRFI/NRFI best bets for today’s action – we’re on a 4-0 run!

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