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MLB Due for a Homer, September 17, 2026

|HeatCheck HQ|3 min read

Not every hitter who should be hitting home runs is hitting home runs. Baseball is random in the short term, and a barrel at 108 mph can be a warning track flyout one day and a 420 foot bomb the next.

These 3 batters have the Statcast profile of power hitters, with elite barrel rate, exit velocity, and expected slugging, but their actual HR totals haven't caught up. With favorable matchups on today's slate, they're the top regression candidates.

1. Will Smith (LAD)

12.2% barrel · 99.6 mph EV · 0.480 xSLG · 40.1% FB · 7 HR · 0.447 platoon SLG · vs Brady Singer (RHP) · 2.18 opp HR/9 (exploitable)

Will Smith hits the ball as hard as anyone, averaging 99.6 mph off the bat, and that raw exit velocity is the engine behind home run power. Yet the 7 home runs he has so far still understate what this batted ball profile should produce. He puts the ball in the air on 40% of contact, exactly the launch profile that turns hard contact into home runs. And Brady Singer is the right arm to face, giving up 2.18 home runs per nine. Smith is my top due for HR call on the slate.

2. Rafael Flores Jr. (PIT)

13.1% barrel · 101.6 mph EV · 0.484 xSLG · 38.1% FB · 8 HR · 0.525 platoon SLG · vs Dustin May (RHP) · 0.97 opp HR/9

Rafael Flores Jr. hits the ball as hard as anyone, averaging 101.6 mph off the bat, and that raw exit velocity is the engine behind home run power. Yet the 8 home runs he has so far still understate what this batted ball profile should produce. He puts the ball in the air on 38% of contact, exactly the launch profile that turns hard contact into home runs. The handedness matchup tilts his way too, a .525 slugging mark against RHP. The regression is coming, and I like Jr. to break through tonight.

3. Jose Siri (LAA)

13.7% barrel · 101.3 mph EV · 0.430 xSLG · 33.3% FB · 8 HR · 0.375 platoon SLG · vs Taj Bradley (RHP) · 1.35 opp HR/9 (exploitable)

Jose Siri hits the ball as hard as anyone, averaging 101.3 mph off the bat, and that raw exit velocity is the engine behind home run power. Yet the 8 home runs he has so far still understate what this batted ball profile should produce. And Taj Bradley is the right arm to face, giving up 1.35 home runs per nine. Siri is due, and tonight is a live spot for it.

How We Find "Due" Hitters

Our dinger model combines 14 Statcast and matchup factors. Full details on the Due for a Homer dashboard.

The key stats that predict HR regression:

  • Barrel %: the best single predictor of home runs. Barrels are batted balls with the optimal combination of exit velocity and launch angle.
  • Exit Velocity: how hard they hit the ball. 95 mph and up is elite.
  • xSLG: expected slugging based on batted ball quality, independent of luck.
  • Fly Ball %: ground balls can't be home runs. A higher FB% means more HR opportunities.

When a hitter has elite numbers in all four and fewer HRs than expected, positive regression is likely.

Research These Players

  • Hitter vs Pitcher: career H2H stats for every batter vs today's opposing pitcher
  • Hitter vs Pitch Mix: per pitch breakdown with barrel rate, EV, and ISO by pitch type
  • Best Bats: 10 factor composite scoring model for today's top prop picks
  • Weather: wind and temperature conditions at every ballpark

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HeatCheck HQ

Editorial & Modeling Team

HeatCheck HQ combines betting market context with sport-specific model outputs across MLB, NBA, and NFL prop markets. Daily picks posts are auto-generated from our scoring models and reviewed by the team for editorial quality.

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