What are MLB park factors?

Park factors measure how much a ballpark inflates or deflates scoring compared to a neutral environment. A park factor above 1.00 favors hitters (more runs), while below 1.00 favors pitchers. Coors Field in Denver is the most extreme hitter-friendly park.

How do park factors affect betting?

Park factors directly impact totals (over/under) lines. High park factor games tend to have higher totals. They also affect moneyline value — a pitcher in a pitcher-friendly park gets a built-in advantage the line may not fully reflect.

Which MLB parks favor hitters the most?

Coors Field (Colorado), Great American Ball Park (Cincinnati), and Globe Life Field (Texas) consistently rank among the most hitter-friendly parks. Altitude, dimensions, and wind patterns are the main drivers.

Which MLB parks favor pitchers the most?

Oracle Park (San Francisco), Petco Park (San Diego), and Tropicana Field (Tampa Bay) are historically pitcher-friendly. Marine air, large outfield dimensions, and enclosed domes suppress scoring.

MLB Reference

MLB Park Factors

Every ballpark has a unique run environment. Understanding park factors is essential for betting totals and evaluating pitching matchups.

Hitter-Friendly

Factor > 1.05

Neutral

0.95 — 1.05

Pitcher-Friendly

Factor < 0.95

🔥 Hitter-Friendly Parks

More runs score here than average. Lean OVER on totals.

Coors Field(Colorado Rockies)

VERY_HIGH

1.39

Extreme altitude (5,280 ft)Thin air = balls carry fartherBreaking pitches less effectiveHighest scoring park in MLB

Globe Life Field(Texas Rangers)

HIGH

1.15

Retractable roof (controlled climate)Short dimensions in alleysBall carries well in Texas heat when open

Great American Ball Park(Cincinnati Reds)

HIGH

1.14

Small dimensionsOhio River wind patternsShort right field porchHistorically homer-friendly

Fenway Park(Boston Red Sox)

MODERATE

1.12

Green Monster (37ft wall in LF)Quirky dimensions boost doublesDeep center fieldInflates hits not HRs

Yankee Stadium(New York Yankees)

MODERATE

1.09

Notoriously short right field porch (314 ft)LHH paradiseWind patterns off Harlem RiverHR-friendly for lefties

Citizens Bank Park(Philadelphia Phillies)

MODERATE

1.07

Symmetrical but short dimensionsBall carries in summer heatWind can blow out to left

Guaranteed Rate Field(Chicago White Sox)

MODERATE

1.06

Upper deck acts as wind tunnelSummer heat helps carryNeutral to slightly hitter-friendly

Wrigley Field(Chicago Cubs)

VARIABLE

1.05

WIND IS EVERYTHING — blowing out = HR derby, blowing in = pitcher duelDay game classicCheck wind direction before betting

⚖️ Neutral Parks

Close to league average. Park effect is minimal.

American Family Field(Milwaukee Brewers)

LOW

1.03

Retractable roofControlled climateSlightly hitter-friendly

Truist Park(Atlanta Braves)

LOW

1.02

Modern parkBalanced dimensionsWarm climate helps slightly

Minute Maid Park(Houston Astros)

LOW

1.02

Retractable roofShort left field (Crawford Boxes)Controlled environment

Angel Stadium(Los Angeles Angels)

LOW

1.01

Marine air keeps balls in parkLarge foul territoryFair weather park

Chase Field(Arizona Diamondbacks)

LOW

1.01

Retractable roof (AC in desert)Pool in right fieldControlled environment

Rogers Centre(Toronto Blue Jays)

LOW

Retractable roof (often closed)Artificial turfTrue neutral

Target Field(Minnesota Twins)

LOW

Cold early seasonWind variableNeutral overall

Busch Stadium(St. Louis Cardinals)

LOW

0.99

Summer heat helpsSlightly suppresses HRsTrue neutral

PNC Park(Pittsburgh Pirates)

LOW

0.99

Deep left-center alleysAllegheny River beyond right fieldGorgeous but neutral

Nationals Park(Washington Nationals)

LOW

0.99

Potomac River nearbyModern dimensionsBalanced park

Comerica Park(Detroit Tigers)

LOW

0.98

Deep center field (420 ft)Suppresses HRsFavors doubles/triples

Citi Field(New York Mets)

LOW

0.97

Deep outfieldWind off Flushing BayPitcher-friendly since renovation

Progressive Field(Cleveland Guardians)

LOW

0.97

Cold early seasonLake Erie wind patternsSlightly favors pitchers

Dodger Stadium(Los Angeles Dodgers)

MODERATE

0.96

Pitcher-friendly night gamesFoul territory is largeDry air helps slightly in day games

Kauffman Stadium(Kansas City Royals)

MODERATE

0.96

Vast outfield dimensionsSuppresses home runsFavors gap hitters and speed

Tropicana Field(Tampa Bay Rays)

MODERATE

0.96

Indoor domeCatwalks interfere with fly ballsControlled but suppressive

🧊 Pitcher-Friendly Parks

Fewer runs score here. Lean UNDER on totals.

loanDepot Park(Miami Marlins)

MODERATE

0.95

Retractable roofDeep dimensionsHumidor suppresses offenseHistorically pitcher-friendly

Petco Park(San Diego Padres)

MODERATE

0.94

Marine layer off PacificDeep dimensionsNight games especially pitcher-friendly

T-Mobile Park(Seattle Mariners)

MODERATE

0.94

Retractable roofPacific Northwest marine airDeep cornersSuppresses power

Oracle Park(San Francisco Giants)

HIGH

0.93

McCovey Cove wind kills fly ballsCold night gamesMarine layer suppresses powerPitcher paradise at night

Oakland Coliseum(Oakland Athletics)

HIGH

0.93

Massive foul territoryBay Area marine layerOne of the most pitcher-friendly parks

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