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.

Alfonso Márquez Profile

Assignments
107

All tracked positions

Home Plate
26

Games with final scores

Base Assignments
81

1B 26 · 2B 28 · 3B 27

Average plate total10.35
Runs vs closing total+2.12
O/U record17-9
Over rate65.4%
Favorite cover7-19
Home win rate50.0%
Average pace168 min
Seasons

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 Diamondbacks 4 4-0 100.0% 100.0% 100.0% 1-3 25.0% +4.25 -1.25
2 Reds 3 2-1 66.7% 50.0% 100.0% 3-0 100.0% +0.83 +3.17
3 Braves 3 1-2 33.3% 100.0% 0.0% 2-1 66.7% -2.17 +2.0
4 Yankees 3 2-1 66.7% 50.0% 100.0% 2-1 66.7% +1.5 +1.67
5 Padres 3 1-2 33.3% 33.3% 2-1 66.7% -0.83 +0.83
6 Brewers 3 0-3 0.0% 0.0% 0.0% 1-2 33.3% -5.17 +3.0
7 Rays 3 0-3 0.0% 0.0% 0.0% 1-2 33.3% -5.5 +0.67
8 Athletics 2 2-0 100.0% 100.0% 2-0 100.0% +6.5 +2.75
9 Guardians 2 1-1 50.0% 0.0% 100.0% 2-0 100.0% -3.5 +3.0
10 Tigers 2 2-0 100.0% 100.0% 2-0 100.0% +5.0 +2.5
11 Marlins 2 1-1 50.0% 50.0% 2-0 100.0% +3.5 +4.25
12 Mets 2 1-1 50.0% 50.0% 2-0 100.0% -1.5 +7.0
13 Phillies 2 0-2 0.0% 0.0% 0.0% 2-0 100.0% -8.5 +5.5
14 Cardinals 2 1-1 50.0% 0.0% 100.0% 2-0 100.0% +0.5 +6.25
15 Astros 2 0-2 0.0% 0.0% 1-1 50.0% -5.0 -0.5
16 Angels 2 2-0 100.0% 100.0% 1-1 50.0% +8.0 +2.5
17 Pirates 2 2-0 100.0% 100.0% 100.0% 1-1 50.0% +4.0 +5.0
18 Mariners 2 0-2 0.0% 0.0% 1-1 50.0% -2.0 -0.25
19 Orioles 1 0-1 0.0% 0.0% 1-0 100.0% -6.5 +5.0
20 Twins 1 1-0 100.0% 100.0% 1-0 100.0% +11.5 +5.5
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 Cubs 1 0-1 0.0% 0.0% 0-1 0.0% -3.5 -6.5
25 White Sox 1 1-0 100.0% 100.0% 0-1 0.0% +0.5 -6.5
26 Dodgers 1 0-1 0.0% 0.0% 0-1 0.0% -0.5 -0.5

Recent Betting Trend

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

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 assignment history by position and team within the selected seasons.

Showing 1-25 of 107 filtered assignments .

Date Home Away Score Favorite RL Home RL O/U Pos Attendance
2026-09-09 Marlins Mets 14-15
Dog 2.5 MIA -1.5
Away 2.5 Home -1.5
Over 20.5 8.5
Second Base 10,955
2026-09-08 Marlins Mets 5-7
Dog 3.5 MIA -1.5
Away 3.5 Home -1.5
Over 4.0 8.0
Third Base 9,470
2026-09-07 Marlins Mets 4-9
Dog 6.5 MIA -1.5
Away 6.5 Home -1.5
Over 5.0 8.0
Home Plate 16,007
2026-08-30 Twins White Sox 5-1
Favorite 2.5 MIN -1.5
Home 2.5 Home -1.5
Under 2.5 8.5
First Base 26,225
2026-08-29 Twins White Sox 2-3
Dog 0.5 CWS -1.5
Home 0.5 Home +1.5
Under 4.0 9.0
Second Base 28,310
2026-08-28 Twins White Sox 4-7
Dog 4.5 MIN -1.5
Away 4.5 Home -1.5
Over 2.0 9.0
Third Base 28,140
2026-08-26 Diamondbacks Cubs 2-0
Dog 3.5 CHC -1.5
Home 3.5 Home +1.5
Under 6.5 8.5
Home Plate 24,297
2026-08-25 Diamondbacks Cubs 5-4
Dog 2.5 CHC -1.5
Home 2.5 Home +1.5
Over 1.0 8.0
First Base 28,215
2026-08-24 Diamondbacks Cubs 0-7
Favorite 5.5 CHC -1.5
Away 5.5 Home +1.5
Under 2.0 9.0
Second Base 28,704
2026-08-23 Dodgers Pirates 4-0
Favorite 2.5 LAD -1.5
Home 2.5 Home -1.5
Under 4.5 8.5
Third Base 44,092
2026-08-22 Dodgers Pirates 4-3
Dog 0.5 LAD -1.5
Away 0.5 Home -1.5
Under 0.5 7.5
Home Plate 53,417
2026-08-21 Dodgers Pirates 5-4
Dog 0.5 LAD -1.5
Away 0.5 Home -1.5
Over 1.0 8.0
First Base 51,872
2026-08-20 Astros Angels 3-18
Dog 16.5 HOU -1.5
Away 16.5 Home -1.5
Over 12.5 8.5
Second Base 20,934
2026-08-19 Astros Angels 3-2
Dog 0.5 HOU -1.5
Away 0.5 Home -1.5
Under 3.5 8.5
Third Base 21,162
2026-08-18 Astros Angels 1-3
Dog 3.5 HOU -1.5
Away 3.5 Home -1.5
Under 5.0 9.0
Home Plate 22,767
2026-08-16 Athletics Rangers 5-2
Dog 4.5 TEX -1.5
Home 4.5 Home +1.5
Under 2.5 9.5
First Base 7,343
2026-08-15 Athletics Rangers 3-5
Favorite 0.5 TEX -1.5
Away 0.5 Home +1.5
Under 1.5 9.5
Second Base 10,070
2026-08-14 Athletics Rangers 8-3
Dog 6.5 TEX -1.5
Home 6.5 Home +1.5
Over 1.5 9.5
Third Base 8,082
2026-08-12 Padres Brewers 4-3
Dog 2.5 MIL -1.5
Home 2.5 Home +1.5
Under 1.0 8.0
Home Plate 36,072
2026-08-11 Padres Brewers 11-2
Dog 10.5 MIL -1.5
Home 10.5 Home +1.5
Over 5.5 7.5
First Base 40,534
2026-08-10 Padres Brewers 3-2
Dog 2.5 MIL -1.5
Home 2.5 Home +1.5
Under 2.0 7.0
Second Base 40,323
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