MLB Player Props for 9-18: Best Bets for Austin Gomber, Spencer Schwellenbach & Freddy Peralta

Freddy Peralta appears due for regression, as do Austin Gomber and Spencer Schwellenbach. Neil Parker breaks down his best MLB prop plays for Wednesday night.

Neil Parker - Analyst at Covers.com
Neil Parker • Betting Analyst
Sep 18, 2024 • 12:11 ET • 4 min read
Milwaukee Brewers MLB Freddy Peralta
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The finish line is in sight with the Wild Card races narrowing, and my MLB player props have you covered for today’s 15-game slate.

Colorado Rockies starter Austin Gomber kickstarts a trio of pitcher props this afternoon, and the recommendations wrap up with Milwaukee Brewers righty Freddy Peralta.

MLB props for September 18

Today’s best MLB props

Prop bet #1: Austin Gomber Under 16.5 outs recorded

-115 at DraftKings

The Arizona Diamondbacks continue to rake with the highest wOBA in baseball this month and since the All-Star break. They also rank second in the metric against lefties for the season. 

It’s a bad spot for Colorado Rockies southpaw Austin Gomber, especially since he’s set for a splash of statistical correction. While he’s cleared this total in six straight starts, his 4.69 xFIP is well above his 3.00 ERA during the stretch, and he’s also served up a 41.8% hard-hit rate. 

Plus, this is a home game for the Rockies at hitter-friendly Coors Field. Not ideal for the soft-tossing southpaw.

Prop bet #2: Spencer Schwellenbach Under 17.5 outs recorded

+121 at Pinnacle

My MLB picks are moving against the market with this one, but Atlanta Braves rookie Spencer Schwellenbach has recorded 17 or fewer outs in four of his past six starts, and he’s already skyrocketed past his prior career-high innings count. There hasn’t been a glaring decline in his numbers across the six-start stretch, but his xFIP is up from 3.21 to 3.55 and a number of additional underlying numbers are moving in the wrong direction.

Schwellenbach has seen his BABIP, average exit velocity, launch angle, barrel percentage, and hard-hit rate all climb across his past six starts, per FanGraphs. The Cincinnati Reds are no joke at home either, as Cincy sports a solid .314 wOBA, .173 ISO, and 9% walk rate at Great American Ball Park.

Prop bet #3: Freddy Peralta Under 17.5 outs recorded

-103 at Caesars

Milwaukee Brewers righty Freddy Peralta has gone Under this total in four of his past five starts despite a tidy 2.42 ERA. His 5.31 xFIP suggests he’s been incredibly lucky, and his 92% strand rate reinforces it. His pitch values are also down across the board during the stretch, per FanGraphs.

Of course, Peralta also draws a tough matchup against the Philadelphia Phillies on Wednesday. Philly ranks third in wOBA (.347) during its active 17-6 run, and the Phillies have been solid against right-handed arms all year with a .318 mark. 

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Today’s MLB games

Here is the schedule and MLB odds for today’s matchups:

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Betting Analyst

Neil Parker is, first and foremost, a sports fan. A huge supporter of the Cowboys, Cubs, and Maple Leafs, he has managed to parlay his passion into writing gigs with Sportsbook Review, USA TODAY, theScore, DraftKings Playbook, and RotoWire, among many others. He also co-hosted the Daily Fantasy Edge podcast and can now be seen offering expert golf and hockey advice on Covers’ Before you Bet broadcast.

Neil takes a numbers-based approach to his handicapping and complements his in-depth statistical analysis with a keen eye on the markets to provide the best available odds. He loves to lean on his rolodex of idioms to offset his inner nerd. When it comes to wagering, he throws down on anything that catches his eye at bet365, Betway and BetVictor. He also keeps a close eye on CoolBet because the polar bear brand often has outlier NHL and NFL moneyline prices.

Neil graduated with honors from St. Thomas University in 2007 before completing his BEd at Acadia University in 2010. After teaching a myriad of courses and subjects, he found a groove delivering fun lessons to exceptional learners in non-traditional classroom environments. If his decade-plus teaching run taught him anything about sports betting, it’s to stay the course and use the summer – or offseason – to refresh and prepare to be better in the year to come.

Neil’s top pieces of advice for recreational bettors are to stay within your means and to remember sportsbooks aren’t bank accounts. Don’t be afraid to pull those winnings and treat yourself to a lifetime experience courtesy of a big win.

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