MLB Player Props & Best Bets for Today, Sept. 21

Colby Marchio - Contributor at Covers.com
Colby Marchio • Betting Analyst 7+ years betting experience
Updated: Sep 21, 2026 , 11:05 AM ET • 4 min read

Josh Bell has been productive against right-handed pitching over his last 30 plate appearances, posting a .519 SLG and .852 OPS while generating a 52% hard-hit rate and 20% barrel rate.

Josh Bell Minnesota Twins MLB
Photo By - Reuters Connect. Minnesota Twins designated hitter Josh Bell (56) hits an RBI single during the third inning against the Los Angeles Angels.

It's Monday, and we have so much to cover in today's MLB player props market, so let's dive in!

Join me as I break down three of my favorite MLB picks for Sept. 21, including picks from all three games on today's abbreviated slate!

Best MLB player props today

Player  Pick Odds
Twins Josh Bell  Over 1.5 Hits, Runs, RBI -117
Orioles Pete Alonso Over 1.5 Hits, Runs, RBI -105
Nationals James Wood Over 1.5 Hits, Runs, RBI -114
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Josh Bell Over 1.5 Hits, Runs, RBI (-117)

It is extremely hard to ignore how well Josh Bell has been hitting against right-handed pitchers of late and not have him on the card this evening. The Minnesota Twins veteran has a .519 SLG and .852 OPS, while generating a 52% hard-hit rate and 20% barrel rate in his last 30 at-bats against right-handed pitchers.

San Francisco Giants starter Blade Tidwell has been getting torched by left-handed hitters across his last few starts. The last 30 he has faced own a .352 xBA and .818 xSLG, while generating a 43% hard-hit rate, 14.3% barrel rate and 76.2% elevation rate.

With Bell also posting just a 32% ground-ball rate over his last 10 games, this could be a great spot for the veteran to boom in the Bay.

Take this down to -125.

  • Time: 9:45 p.m. ET
  • Where to watch: NBCSBA, MNNT

Pete Alonso Over 1.5 Hits, Runs, RBI (-105)

Very wild for this prop to be priced at nearly even money when Baltimore Orioles slugger Pete Alonso has surpassed his 2+ hits, runs, or RBI prop almost 66% of the time this season when elite on Batters-Box. That comes from a 35 elite-rating sample size, too. In 18 elite ratings at home, he has gone over this prop nearly 78% of the time.

Before Toronto Blue Jays right-hander Trey Yesavage's injury, the last 60 right-handed hitters he faced owned a .314 xBA and .500 xSLG, while posting a near 11% barrel rate and elevating the ball 67.6% of the time.

In his last 30 at-bats against right-handed pitchers, Alonso owns a .731 SLG and 1.098 OPS, with a 25% barrel rate. Over his last 10 games, he still has a .513 SLG and an 18.5% barrel rate.

At $1.05, it's hard to pass up this price while overlooking those trends.

Take this down to -125.

  • Time: 6:35 p.m. ET
  • Where to watch: MASN, Sportsnet

James Wood Over 1.5 Hits, Runs, RBI (-114)

Finally, it is once again James Wood Day, as the big fella draws Detroit Tigers right-hander Keider Montero, who is slated to be the bulk hurler behind River Ryan tonight.

Montero has been getting crushed by left-handed hitters over his last three games. During that stretch, lefties own a .323 xBA, .584 xSLG and .387 xwOBA. On top of that, they are generating a hard-hit rate above 46%, a 10.7% barrel rate and a near-80% elevation rate.

The Washington Nationals star has been making too much hard contact to ignore, with three of his last five batted balls coming off the bat at over 103.9 mph. Shockingly, only one of those three resulted in a hit. However, that much hard contact will eventually find grass or the bleachers.

Over his last 30 at-bats against right-handed pitching, Wood sports a .433 OBP while generating a hard-hit rate above 66%.

Wood also has the No. 1 rating on Batters-Box tonight, where he has surpassed this prop nearly 54% of the time this season. That comes across 39 elite ratings this season.

Take this down to -120.

  • Time: 6:40 p.m. ET
  • Where to watch: DSN, NATS
Colby Marchio's 2026 Transparency Record
  • Prop picks: 521-1028, +4.5 units

Odds are correct at the time of publishing and are subject to change.
Not intended for use in MA.
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Colby Marchio
Betting Analyst

Colby Marchio is a two-time DePaul alum and former Division 1 (club) baseball player who has been sports betting since 2019. Since graduating in 2021, he has worked throughout the media circuit, hosting and appearing on various television and radio shows while making countless guest appearances discussing Major League Baseball, college basketball, college football, and the National Football League.

A self-proclaimed numbers nerd, Colby may enjoy digging through the data even more than winning itself. That passion is why his two favorite sports to cover are college basketball and Major League Baseball. 

As for his favorite sportsbook, it is whichever one has the best price, or whichever one is not taxing him as an Illinois resident. 

You can find all of his plays and more @ColbyMBets on Twitter/X.

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