RefMetrics Baseball

MLB Umpire Profiles

Break down one MLB umpire at a time with assignment counts, home plate scoring context, pace, attendance, recent appearances, and betting performance.

Select an umpire to move from high-level leaderboard volume into plate-level game context and betting trends.

Umpire Profile

Search through all logged MLB umpires and inspect where they work most often and what their home plate games look like.

Selected Umpire
Alfonso Márquez

Current profile selection.

Assignments
1,379

Across 12 tracked seasons.

Plate Games
343

343 tracked home plate assignments with final scores.

Base Positions
1036

1B 343 • 2B 339 • 3B 354

Avg Plate Total
9.6

Expected total 8.49 on average.

Runs vs Total
+0.92

Positive means this umpire’s plate games finish above the closing total.

O/U Record
16-5

76.2% over rate across 21 totals.

Favorite Cover
7-14

33.3% favorite cover rate across 21 run-line games.

Home Win %
56.0%

Share of tracked home plate games won by the home team.

Pace & Crowd
180 min

Avg attendance 29,535 in plate games.

Best ATS Team
Diamondbacks
Arizona Diamondbacks
3-0

100.0% cover across 3 games . Avg vs RL +4.50 .

Toughest ATS Team
Braves
Atlanta Braves
1-2

33.3% cover across 3 games . Avg vs RL -2.17 .

Most Over Team
Reds
Cincinnati Reds
3-0

100.0% over across 3 games . Avg vs total +3.17 .

Most Under Team
Diamondbacks
Arizona Diamondbacks
1-2

33.3% over across 3 games . Avg vs total +0.50 .

Profile Breakdown

Switch between team-level betting analysis and the full assignment schedule for Alfonso Márquez.

Green = positive result for that angle. Favorite RL = the market favorite versus the run line. Home RL = the home team versus the run line. O/U = total.

Team Betting Splits

How individual teams perform against the number when Alfonso Márquez is behind the plate in the selected betting sample.

Sort by sample size, team cover rate, home cover rate, totals rate, or average margin versus the number.

# Team Games ATS Record Team Cover % Home Cover % Away Cover % O/U Record Over % Avg vs RL Avg vs Total
1 Reds 3 2-1 66.7% 50.0% 100.0% 3-0 100.0% +0.83 +3.17
2 Braves 3 1-2 33.3% 100.0% 0.0% 2-1 66.7% -2.17 +2.0
3 Yankees 3 2-1 66.7% 50.0% 100.0% 2-1 66.7% +1.5 +1.67
4 Diamondbacks 3 3-0 100.0% 100.0% 100.0% 1-2 33.3% +4.5 +0.5
5 Rays 3 0-3 0.0% 0.0% 0.0% 1-2 33.3% -5.5 +0.67
6 Athletics 2 2-0 100.0% — 100.0% 2-0 100.0% +6.5 +2.75
7 Guardians 2 1-1 50.0% 0.0% 100.0% 2-0 100.0% -3.5 +3.0
8 Tigers 2 2-0 100.0% — 100.0% 2-0 100.0% +5.0 +2.5
9 Phillies 2 0-2 0.0% 0.0% 0.0% 2-0 100.0% -8.5 +5.5
10 Padres 2 0-2 0.0% 0.0% — 2-0 100.0% -2.5 +1.75
11 Cardinals 2 1-1 50.0% 0.0% 100.0% 2-0 100.0% +0.5 +6.25
12 Brewers 2 0-2 0.0% 0.0% 0.0% 1-1 50.0% -6.5 +5.0
13 Mariners 2 0-2 0.0% 0.0% — 1-1 50.0% -2.0 -0.25
14 Orioles 1 0-1 0.0% — 0.0% 1-0 100.0% -6.5 +5.0
15 Astros 1 0-1 0.0% 0.0% — 1-0 100.0% -6.5 +4.0
16 Angels 1 1-0 100.0% — 100.0% 1-0 100.0% +12.5 +10.0
17 Marlins 1 1-0 100.0% 100.0% — 1-0 100.0% +13.5 +3.5
18 Twins 1 1-0 100.0% — 100.0% 1-0 100.0% +11.5 +5.5
19 Mets 1 0-1 0.0% — 0.0% 1-0 100.0% -9.5 +9.0
20 Pirates 1 1-0 100.0% 100.0% — 1-0 100.0% +7.5 +10.5
21 Rangers 1 0-1 0.0% 0.0% — 1-0 100.0% -11.5 +5.5
22 Nationals 1 1-0 100.0% — 100.0% 1-0 100.0% +9.5 +4.0
23 Red Sox 1 1-0 100.0% 100.0% — 0-1 0.0% +3.5 -1.5
24 White Sox 1 1-0 100.0% — 100.0% 0-1 0.0% +0.5 -6.5

Recent Betting Trend

Home plate game-by-game result and running streak for Alfonso Márquez in 2026.

Team Splits

Team cover % and over % when Alfonso Márquez is behind the plate, for every team in the sample (games shown in parentheses).

Assignment Schedule

Filter the full MLB assignment history for Alfonso Márquez by season, position, and team.

Clear Filters

Showing 1-25 of 1379 filtered assignments .

Date Home Away Score Favorite RL Home RL O/U Pos Attendance
2026-08-02 Rays White Sox 1-9
Dog 9.5 TB -1.5
Away 9.5 Home -1.5
Over 2.5 7.5
Third Base 23,559
2026-08-01 Rays White Sox 1-0
Dog 0.5 TB -1.5
Away 0.5 Home -1.5
Under 6.5 7.5
Home Plate 23,309
2026-07-31 Rays White Sox 1-6
Dog 6.5 TB -1.5
Away 6.5 Home -1.5
Under 1.5 8.5
First Base 20,661
2026-07-29 Reds Guardians 1-6
Favorite 3.5 CLE -1.5
Away 3.5 Home +1.5
Under 2.0 9.0
Second Base 17,084
2026-07-28 Reds Guardians 5-6
Dog 2.5 CIN -1.5
Away 2.5 Home -1.5
Over 2.0 9.0
Home Plate 16,866
2026-07-26 Mets Dodgers 8-3
Dog 6.5 LAD -1.5
Home 6.5 Home +1.5
Over 2.5 8.5
First Base 34,566
2026-07-25 Mets Dodgers 3-4
Dog 0.5 LAD -1.5
Home 0.5 Home +1.5
Under 0.5 7.5
Second Base 36,356
2026-07-24 Mets Dodgers 2-4
Favorite 0.5 LAD -1.5
Away 0.5 Home +1.5
Under 3.0 9.0
Third Base 35,338
2026-07-23 Cardinals Diamondbacks 6-10
Dog 5.5 STL -1.5
Away 5.5 Home -1.5
Over 8.5 7.5
Home Plate 32,381
2026-07-22 Royals Giants 5-4
Dog 2.5 SF -1.5
Home 2.5 Home +1.5
Over 0.5 8.5
First Base 14,606
2026-07-21 Royals Giants 3-2
Dog 2.5 SF -1.5
Home 2.5 Home +1.5
Under 4.0 9.0
Second Base 25,175
2026-07-20 Royals Giants 4-3
Dog 0.5 KC -1.5
Away 0.5 Home -1.5
Under 3.0 10.0
Third Base 16,411
2026-07-19 Red Sox Rays 6-1
Favorite 3.5 BOS -1.5
Home 3.5 Home -1.5
Under 1.5 8.5
Home Plate 32,950
2026-07-18 Red Sox Rays 7-6
Dog 2.5 TB -1.5
Home 2.5 Home +1.5
Over 3.5 9.5
First Base 33,077
2026-07-17 Red Sox Rays 10-0
Dog 11.5 TB -1.5
Home 11.5 Home +1.5
Over 1.5 8.5
Third Base 36,774
2026-07-17 Red Sox Rays 5-3
Dog 3.5 TB -1.5
Home 3.5 Home +1.5
Under 1.0 9.0
Second Base 34,255
2026-07-12 Pirates Brewers 14-5
Favorite 7.5 PIT -1.5
Home 7.5 Home -1.5
Over 10.5 8.5
Home Plate 34,087
2026-07-11 Pirates Brewers 7-6
Dog 2.5 MIL -1.5
Home 2.5 Home +1.5
Over 4.5 8.5
Second Base 22,484
2026-07-11 Pirates Brewers 3-2
Dog 2.5 MIL -1.5
Home 2.5 Home +1.5
Under 4.0 9.0
First Base 29,080
2026-07-09 Reds Phillies 0-1
Dog 0.5 PHI -1.5
Home 0.5 Home +1.5
Under 8.5 9.5
Third Base 19,777
2026-07-08 Reds Phillies 11-5
Favorite 4.5 CIN -1.5
Home 4.5 Home -1.5
Over 7.0 9.0
Home Plate 33,089
2026-07-07 Reds Phillies 1-4
Favorite 1.5 PHI -1.5
Away 1.5 Home +1.5
Under 4.0 9.0
First Base 31,204
2026-07-06 Braves Mets 6-7
Dog 2.5 ATL -1.5
Away 2.5 Home -1.5
Over 4.0 9.0
Second Base 31,445
2026-07-05 Braves Mets 9-10
Dog 0.5 NYM -1.5
Home 0.5 Home +1.5
Over 10.5 8.5
Third Base 28,621
2026-07-04 Braves Mets 14-3
Favorite 9.5 ATL -1.5
Home 9.5 Home -1.5
Over 9.0 8.0
Home Plate 40,168