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
1,373

Across 12 tracked seasons.

Plate Games
341

341 tracked home plate assignments with final scores.

Base Positions
1032

1B 341 • 2B 338 • 3B 353

Avg Plate Total
9.62

Expected total 8.45 on average.

Runs vs Total
+0.91

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

O/U Record
92-68-9

54.4% over rate across 169 totals.

Favorite Cover
68-86

44.2% favorite cover rate across 154 run-line games.

Home Win %
56.0%

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

Pace & Crowd
181 min

Avg attendance 29,593 in plate games.

Profile Breakdown

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

Team Betting Splits

How individual teams perform against the number when Alfonso Márquez is behind the plate.

# Team Games ATS Record Team Cover % Home Cover % Away Cover % O/U Record Over % Avg vs RL Avg vs Total
1 Arizona Diamondbacks 31 9-5 64.3% 57.1% 71.4% 6-6-2 42.9% +1.14 -0.11
2 Atlanta Braves 30 12-5 70.6% 83.3% 63.6% 12-6 66.7% +1.26 +0.67
3 Philadelphia Phillies 30 7-8 46.7% 37.5% 57.1% 8-7 53.3% -0.5 +0.2
4 Texas Rangers 29 6-8 42.9% 62.5% 16.7% 5-9-1 33.3% -0.64 -0.3
5 Los Angeles Dodgers 29 2-5 28.6% 50.0% 0.0% 2-3-2 28.6% -3.5 -1.43
6 Miami Marlins 28 8-5 61.5% 83.3% 42.9% 9-6 60.0% +0.19 +0.93
7 San Diego Padres 28 3-8 27.3% 28.6% 25.0% 6-4-1 54.5% -1.05 +1.68
8 Houston Astros 28 6-3 66.7% 66.7% 66.7% 5-5-1 45.5% +0.61 +1.45
9 Milwaukee Brewers 26 5-12 29.4% 33.3% 25.0% 11-5-1 64.7% -1.15 +1.44
10 Detroit Tigers 26 6-6 50.0% 25.0% 62.5% 6-5-1 50.0% +0.42 +1.75
11 Seattle Mariners 26 3-8 27.3% 16.7% 40.0% 6-6-1 46.2% -1.32 -0.15
12 Los Angeles Angels 26 6-7 46.2% 57.1% 33.3% 6-6-2 42.9% +0.81 +1.14
13 New York Mets 26 8-4 66.7% 80.0% 57.1% 4-8-2 28.6% +1.33 -0.43
14 New York Yankees 25 7-7 50.0% 45.5% 66.7% 9-7 56.2% 0.0 +0.75
15 San Francisco Giants 24 3-8 27.3% 33.3% 20.0% 6-5-2 46.2% -1.14 +0.54
16 Boston Red Sox 23 8-2 80.0% 80.0% 80.0% 9-4 69.2% +0.5 +1.81
17 Washington Nationals 21 5-6 45.5% 40.0% 50.0% 7-6 53.8% +0.86 -0.12
18 St. Louis Cardinals 20 6-2 75.0% 66.7% 80.0% 6-3 66.7% +1.38 +2.83
19 Minnesota Twins 19 5-6 45.5% 40.0% 50.0% 9-2 81.8% -0.77 +2.64
20 Pittsburgh Pirates 19 4-1 80.0% 66.7% 100.0% 4-2 66.7% +3.3 +1.5
21 Baltimore Orioles 19 5-3 62.5% 100.0% 40.0% 4-5-1 40.0% +0.38 +0.45
22 Toronto Blue Jays 18 4-8 33.3% 28.6% 40.0% 11-2 84.6% -2.25 +3.58
23 Oakland Athletics 18 2-3 40.0% 50.0% 33.3% 3-3 50.0% -1.7 +2.0
24 Chicago Cubs 18 2-2 50.0% 0.0% 66.7% 1-5 16.7% +0.25 -2.83
25 Tampa Bay Rays 17 6-3 66.7% 66.7% 66.7% 7-3 70.0% +2.5 +2.25
26 Chicago White Sox 16 4-3 57.1% 50.0% 66.7% 5-2 71.4% +1.07 +1.71
27 Colorado Rockies 15 2-4 33.3% 0.0% 50.0% 3-2-1 50.0% -1.83 +0.25
28 Kansas City Royals 15 3-2 60.0% 33.3% 100.0% 2-3 40.0% +1.7 -2.1
29 Cincinnati Reds 12 4-2 66.7% 66.7% 66.7% 2-4 33.3% -0.17 -1.0
30 Cleveland Indians 9 N/A 1-0 100.0% +0.5
31 Cleveland Guardians 8 1-7 12.5% 25.0% 0.0% 6-2 75.0% -1.75 +3.25
32 Athletics 3 2-1 66.7% 0.0% 100.0% 3-0 100.0% +2.5 +2.83

Assignment Schedule

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

Scores are shown home-away. Green marks a positive betting result for that column's angle, and red marks a negative one.

Showing 1-25 of 1373 filtered assignments .

Date Home Away Score Favorite RL Home RL O/U Pos Attendance
2026-07-25 NYM LAD 3-4
Result Dog 0.5 Line LAD -1.5
Result Home 0.5 Line Home +1.5
Result Under 0.5 Total 7.5
Second Base 36,356
2026-07-24 NYM LAD 2-4
Result Favorite 0.5 Line LAD -1.5
Result Away 0.5 Line Home +1.5
Result Under 3.0 Total 9.0
Third Base 35,338
2026-07-23 STL ARI 6-10
Result Dog 5.5 Line STL -1.5
Result Away 5.5 Line Home -1.5
Result Over 8.5 Total 7.5
Home Plate 32,381
2026-07-22 KC SF 5-4
Result Dog 2.5 Line SF -1.5
Result Home 2.5 Line Home +1.5
Result Over 0.5 Total 8.5
First Base 14,606
2026-07-21 KC SF 3-2
Result Dog 2.5 Line SF -1.5
Result Home 2.5 Line Home +1.5
Result Under 4.0 Total 9.0
Second Base 25,175
2026-07-20 KC SF 4-3
Result Dog 0.5 Line KC -1.5
Result Away 0.5 Line Home -1.5
Result Under 3.0 Total 10.0
Third Base 16,411
2026-07-19 BOS TB 6-1
Result Favorite 3.5 Line BOS -1.5
Result Home 3.5 Line Home -1.5
Result Under 1.5 Total 8.5
Home Plate 32,950
2026-07-18 BOS TB 7-6
Result Dog 2.5 Line TB -1.5
Result Home 2.5 Line Home +1.5
Result Over 3.5 Total 9.5
First Base 33,077
2026-07-17 BOS TB 10-0
Result Dog 11.5 Line TB -1.5
Result Home 11.5 Line Home +1.5
Result Over 1.5 Total 8.5
Third Base 36,774
2026-07-17 BOS TB 5-3
Result Dog 3.5 Line TB -1.5
Result Home 3.5 Line Home +1.5
Result Under 1.0 Total 9.0
Second Base 34,255
2026-07-12 PIT MIL 14-5
Result Favorite 7.5 Line PIT -1.5
Result Home 7.5 Line Home -1.5
Result Over 10.5 Total 8.5
Home Plate 34,087
2026-07-11 PIT MIL 7-6
Result Dog 2.5 Line MIL -1.5
Result Home 2.5 Line Home +1.5
Result Over 4.5 Total 8.5
Second Base 22,484
2026-07-11 PIT MIL 3-2
Result Dog 2.5 Line MIL -1.5
Result Home 2.5 Line Home +1.5
Result Under 4.0 Total 9.0
First Base 29,080
2026-07-09 CIN PHI 0-1
Result Dog 0.5 Line PHI -1.5
Result Home 0.5 Line Home +1.5
Result Under 8.5 Total 9.5
Third Base 19,777
2026-07-08 CIN PHI 11-5
Result Favorite 4.5 Line CIN -1.5
Result Home 4.5 Line Home -1.5
Result Over 7.0 Total 9.0
Home Plate 33,089
2026-07-07 CIN PHI 1-4
Result Favorite 1.5 Line PHI -1.5
Result Away 1.5 Line Home +1.5
Result Under 4.0 Total 9.0
First Base 31,204
2026-07-06 ATL NYM 6-7
Result Dog 2.5 Line ATL -1.5
Result Away 2.5 Line Home -1.5
Result Over 4.0 Total 9.0
Second Base 31,445
2026-07-05 ATL NYM 9-10
Result Dog 0.5 Line NYM -1.5
Result Home 0.5 Line Home +1.5
Result Over 10.5 Total 8.5
Third Base 28,621
2026-07-04 ATL NYM 14-3
Result Favorite 9.5 Line ATL -1.5
Result Home 9.5 Line Home -1.5
Result Over 9.0 Total 8.0
Home Plate 40,168
2026-07-03 ATL NYM 5-3
Result Dog 3.5 Line NYM -1.5
Result Home 3.5 Line Home +1.5
Result Under 1.0 Total 9.0
First Base 39,138
2026-07-01 NYY DET 2-6
Result Dog 5.5 Line NYY -1.5
Result Away 5.5 Line Home -1.5
Result Under 1.5 Total 9.5
Second Base 37,117
2026-06-30 NYY DET 3-9
Result Favorite 4.5 Line DET -1.5
Result Away 4.5 Line Home +1.5
Result Over 5.0 Total 7.0
Third Base 37,211
2026-06-29 NYY DET 3-7
Result Dog 5.5 Line NYY -1.5
Result Away 5.5 Line Home -1.5
Result Over 2.0 Total 8.0
Home Plate 40,506
2026-06-20 CHC TOR 6-8
Result Dog 3.5 Line CHC -1.5
Result Away 3.5 Line Home -1.5
Result Over 5.0 Total 9.0
First Base 40,706
2026-06-19 CHC TOR 16-2
Result Dog 15.5 Line TOR -1.5
Result Home 15.5 Line Home +1.5
Result Over 11.0 Total 7.0
Second Base 40,275