Vol. I · Issue 20
Monday, April 20, 2026

The Dinger Almanac

··· Baseball Statistics & Analysis ···


Matchup · Monday, April 20, 2026

St. Louis Cardinals
at Miami Marlins

6:40 PM ET · 3:40 PM PTloanDepot park, Miamiretractable roof

The Headline

Jordan Walker enters this game with a 15.4% model-estimated probability of homering at loanDepot park, the strongest HR spot on the board. Below: full lineups for both teams, ranked by expected HR output, alongside detailed profiles of both probable starters.

Park Factors
LHB HR factor91
RHB HR factor92

Probable Starters


Away Starter · RHP

Michael McGreevy

HR VulnerabilityAverage
Contact Quality AllowedGetting barreled
ERA2.49
WHIP0.83
IP21.2
HR/91.30
K/95.0
xwOBA0.415
Barrel%14.9%
Hard-hit%38.8%
Home Starter · RHP

Max Meyer

HR VulnerabilityGood
Contact Quality AllowedBelow average
ERA4.12
WHIP1.32
IP19.2
HR/90.90
K/99.2
xwOBA0.360
Barrel%10.2%
Hard-hit%42.4%

The Lineups

Each batter's probability of homering in the game, ranked.


Away Lineup

St. Louis Cardinals

Home Lineup

Miami Marlins

A Note on These Numbers

HR probabilities come from our calibrated probability model combining season stats, recent form, Statcast quality, handedness splits, and park effects. Even the top pick on any given day misses 75-80% of the time — home runs are genuinely rare events. See the calibration page for how accurate these numbers have been historically.