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MLB Home Run Props

MLB Home Run Props Tonight: AI Picks, Park Factors, and Pitcher Matchups

Anytime home run props are the most-bet MLB market on FanDuel and DraftKings — and the most mispriced. PropsBot uses AI to surface tonight’s highest-edge HR props by combining park factor, weather, pitcher HR/9, pitch mix, and batter platoon splits.

See tonight’s top HR picks → | Start free trial at app.propsbot.ai →

How PropsBot Finds Profitable MLB Home Run Props

Every MLB hitter has a baseline home run probability for any given plate appearance — typically 3% to 4% league-wide. PropsBot’s model recalculates that probability for each batter, each night, by layering five independent inputs:

  1. Batter true-talent HR rate (rolling 365-day at-bat sample, regressed to position average)
  2. Park factor for the venue (HR-specific, not generic run factor)
  3. Pitcher HR-allowed rate (HR/9 weighted to last 60 IP, with pitch-mix adjustments)
  4. Platoon split (handedness matchup, with three-year stable splits)
  5. Weather at first pitch — wind direction, wind speed, temperature, humidity, and elevation-adjusted air density

That gives a “fair” HR probability for each batter. PropsBot then converts the sportsbook’s anytime HR price into an implied probability, removes the vig, and compares the two. Anything where the model’s probability is meaningfully higher than the no-vig probability gets a positive Edge Score, and everything is ranked by Confidence Score.

The result: a sortable list of every anytime HR prop on every major sportsbook, ranked by expected value. 31.7% verified ROI across 101,881 tracked bets is what comes out the other side. Confidence Score 75+ picks have hit 82.6% across 136,953 tracked MLB props, with model Brier 0.1903 vs Vegas 0.1947 — meaning PropsBot is more accurate than the sportsbooks at predicting MLB outcomes.

Top Factors for MLB Home Run Props

Park factor

Park factor is the single biggest non-batter variable. Approximate three-year HR park factors:

HR-friendly (boost):
– Coors Field (COL) — 130. Thin Denver air at 5,200 ft adds 5-7% to fly-ball carry.
– Great American Ball Park (CIN) — 122. Short porches.
– Yankee Stadium (NYY) — 118. The 314-foot right field foul pole is a gift to lefty pull hitters.
– Wrigley Field (CHC) — 115+ when the wind blows out to Waveland.
– Citizens Bank Park (PHI) — 110.

HR-suppressing (fade):
– Oakland Coliseum (OAK) — 88. Massive foul territory, marine layer, cold nights.
– Petco Park (SD) — 90. Heavy marine air kills carry.
– Tropicana Field (TB) — 92.
– loanDepot park (MIA) — 93.

A power hitter with an 8% baseline HR probability in a neutral park is closer to 10.4% in Coors and 7% in Oakland.

Weather and wind

Wind direction is the largest single weather variable:

Temperature adds 2-3 feet of fly-ball carry per +10°F. Humidity counterintuitively makes HRs more likely (humid air is less dense). Elevation: Coors is the obvious case, but Chase Field (1,100 ft) and Truist Park (1,000 ft) also see a measurable boost.

Pitcher matchup: HR/9, pitch mix, and handedness

HR/9 (home runs allowed per nine innings) is the cleanest pitcher HR predictor — cleaner than ERA, FIP, or strikeout rate.

A power hitter facing a 0.8 HR/9 pitcher has roughly half the HR probability of the same hitter facing a 2.0 HR/9 pitcher.

Pitch mix is the next layer:

Batter platoon advantage

Three-year splits matter more than single-season noise. The archetype that consistently shows up in PropsBot’s top picks: power lefty vs. RHP in a HR-friendly park — bread-and-butter +EV setup.

Recent power form

Use ISO (Isolated Power) — slugging percentage minus batting average — which strips out batting average noise:

PropsBot’s model uses Statcast-style underlying inputs (barrel rate, hard-hit rate, average exit velocity on fly balls) rather than raw HR count.

Anytime Home Run vs First Home Run Props

Anytime home run — yes/no on whether a specific batter hits at least one HR. Typical price range: +250 to +1500. Deepest, most liquid HR market. PropsBot focuses 90% of HR coverage here.

First home run — bets on which player will hit the first HR of the game. Prices typically +600 to +2000. Thinner market, higher variance, wider vig (15-25% vs 6-10% on anytime HR).

Practical rule: find your anytime HR edges first. If the same player has a first HR price with comparable edge after the wider vig, layer it as a smaller satellite bet.

Today’s Best MLB Home Run Picks

PropsBot’s top HR picks update continuously. Filter /best-props-today/ by market = “Home Run” to see anytime HR picks across DraftKings, FanDuel, BetMGM, Caesars, Kalshi, and Novig — each with Confidence Score, Edge Score, and the model’s reasoning.

Check 90 minutes before first pitch — that’s when starting lineups are finalized and weather is locked in.

Home Run Props Across Sportsbooks

FanDuel

The headline market for HRs. FanDuel typically posts the largest player pool with anytime HR lines on every batter. See FanDuel player props guide.

DraftKings

The deepest catalog by prop type. DraftKings posts anytime HR, first HR, last HR, 2+ HR, and player-vs-player HR matchups. See DraftKings player props.

BetMGM and Caesars

Both post full anytime HR markets. Generally tighter limits, but pricing is competitive. See BetMGM player props and Caesars player props.

Kalshi and Novig (no-vig / exchange)

Kalshi and Novig price HR props on an exchange model — no traditional vig, just a small commission. For high-edge picks, prices are often 50-100 cents better than the books. See Kalshi sports player props and Novig player props.

Common Mistakes in Home Run Prop Betting

1. Backing only stars. Aaron Judge, Shohei Ohtani, Kyle Schwarber, Pete Alonso lines are systematically shaded short. Real +EV is in role players with platoon advantages.

2. Ignoring wind direction. A 12 mph wind blowing in at Wrigley reduces HR probability by ~25%.

3. Using ERA instead of HR/9. ERA includes everything; HR/9 isolates the only thing that matters for HR props.

4. Chasing yesterday’s HR. Public bias on hot hitters — next-day line is shaded short.

5. Not adjusting for park. Coors and Oakland are not the same baseball game.

6. Stacking too many HRs in a parlay. A 5-leg HR parlay at +600 each has a true hit rate of ~0.03% — far below the parlay price.

7. Betting first HR as a primary play. Higher vig, much higher variance, smaller market.

8. Ignoring lineup spot. Leadoff and No. 2 hitters get 4.5 PAs vs 3.7 for the No. 7 hitter — 22% more chances baked in.

Frequently Asked Questions

What is an anytime home run prop?

A yes/no bet on whether a specific batter hits at least one home run during the game. Typical prices range from +250 to +1500+.

What are the best home run props today?

PropsBot updates the top home run picks continuously. See tonight’s top HR plays at /best-props-today/.

Which sportsbook has the best home run prop pricing?

For traditional sportsbooks, FanDuel and DraftKings typically have the deepest HR markets. For lower-vig pricing, Kalshi and Novig price HR props on an exchange model.

What’s the average anytime HR probability?

Roughly 3-4% per plate appearance, ~12-15% per game over 4 PAs. Power hitters in HR-friendly parks against vulnerable pitchers can climb to 20-30% per game.

Is HR/9 or ERA better for HR prop research?

HR/9 is dramatically better. ERA blends in strand rate, defense, BABIP, and blowups. HR/9 isolates HR rate.

How does Coors Field affect home run props?

Coors has roughly a 130 HR park factor — about 30% more HR-friendly than league average. Every batter in a Coors game gets a meaningful model bump.

What is a good Edge Score for home run props?

+5% Edge is meaningful, +10% is strong, +15%+ is rare but exists in extreme park/weather/pitcher combinations.

Find Tonight’s HR Edges

See tonight’s MLB home run picks → | Start free trial at app.propsbot.ai →

Related:
– MLB Player Props Hub — full MLB market coverage
– Strikeout Props Today — pitcher Ks
– Hits Props Today — batter hits
– Best Props Today — full slate, all sports
– Positive EV Props — what +EV actually means
– AI Betting Bot — how the model works

MLB Power Hitters With HR Coverage

Each hitter page below covers HR prop modeling, ballpark factors, weather impact, and opposing pitcher matchup:

Browse the full player prop hub. Glossary: home runs, total bases, doubles.