Baseball · Ranking Updated Aug. 12, 2026
Current ranking · Aug. 2026

Best MLB relief pitchers right now

AIresearched
baseline
+1vote per
month

Aroldis Chapman ranks first among these MLB relief pitchers, and Mason Miller ranks second. All five contenders were evaluated on the same published criteria, and their weighted scores determine the order from highest to lowest.

IMPORTANT CONTEXTStats, injuries, roles, rosters, and availability can change quickly. Use the linked league and statistics pages for the latest game-day context.
01
BRS
Boston Red Sox

Aroldis Chapman

Best current overall case

Aroldis Chapman represents Boston Red Sox in this mlb relief pitchers comparison. It is the strongest all-around choice in this group, with its clearest strengths in peak and impact. The peak assessment focuses on best-season or current high-end performance for the topic. Consistency is the main point to compare with the nearby contenders before choosing it.
94/100
0 votes
02
SDP
San Diego Padres

Mason Miller

Closest current challenger

Mason Miller represents San Diego Padres in this mlb relief pitchers comparison. It is the closest alternative to the top choice, with its clearest strengths in peak and impact. The peak assessment focuses on best-season or current high-end performance for the topic. Complete game is the main point to compare with the nearby contenders before choosing it.
92/100
0 votes
03
LAD
Los Angeles Dodgers

Edwin Diaz

Strong current top-three case

Edwin Diaz represents Los Angeles Dodgers in this mlb relief pitchers comparison. It offers a balanced middle-ground choice, with its clearest strengths in consistency and impact. The consistency assessment focuses on ability to sustain value across games and seasons. Big moments is the main point to compare with the nearby contenders before choosing it.
90/100
0 votes
04
CG
Cleveland Guardians

Cade Smith

Current top-five specialist

Cade Smith represents Cleveland Guardians in this mlb relief pitchers comparison. It is a more specialized alternative, with its clearest strengths in big moments and impact. The big moments assessment focuses on performance under the highest-leverage conditions. Consistency is the main point to compare with the nearby contenders before choosing it.
88/100
0 votes
COMMUNITY WRITE-INS

Who did the top five miss?

Three independent write-ins unlock an honorable mention. The 10 strongest active mentions are shown; inactive mentions archive after 12 months. At 25 monthly votes, a contender enters a scoring review for possible top-five promotion.

No honorable mentions yet. Repeated write-ins merge automatically.

Commercial-link disclosure: Some shopping and booking links may become affiliate links when a partner relationship is active. SummaRank may then earn a commission from qualifying purchases or bookings, at no added cost to you. Commercial availability never affects scores or rank order.

HOW ALL FIVE SCORED

The five criteria create the AI baseline. The community adjustment is then added or subtracted to produce the current published score.

Keep the criteria fixedSwipe to compare all five →
Criterion#1Aroldis Chapman#2Mason Miller#3Edwin Diaz#4Cade Smith#5Andres Munoz
9597908689
9289938387
9591919184
9489889184
9390889284
AI baseline scoreWeighted criteria result94.092.090.288.086.1
Community adjustmentVote-share influence0.00.00.00.00.0
Current published scoreBaseline + community9492908886
#1

Aroldis Chapman

94/100
AI baseline94.0
Community0.0
Published94
#2

Mason Miller

92/100
AI baseline92.0
Community0.0
Published92
#3

Edwin Diaz

90/100
AI baseline90.2
Community0.0
Published90
#4

Cade Smith

88/100
AI baseline88.0
Community0.0
Published88
#5

Andres Munoz

86/100
AI baseline86.1
Community0.0
Published86
Peak · 30%Best-season or current high-end performance for the topic.

COMPARE THE TOP TWO

Select any two contenders above.
We’ll line up what matters.

CONTENDER
BRS
Boston Red Sox

Aroldis Chapman

94
SDP
San Diego Padres

Mason Miller

92
Team
Boston Red Sox
San Diego Padres
Ranking result
#1 · Highest weighted score
#2 · Second-highest weighted score
Strongest case
Peak
Peak
Also strong in
Impact
Impact
Compare closely
Consistency
Complete game
BRS
Boston Red Sox

Aroldis Chapman

94/100
SDP
San Diego Padres

Mason Miller

92/100

Team

Boston Red Sox

San Diego Padres

Ranking result

#1 · Highest weighted score

#2 · Second-highest weighted score

Strongest case

Peak

Peak

Also strong in

Impact

Impact

Compare closely

Consistency

Complete game

THE RECEIPTS,
NOT THE MYSTERY.

SummaRank compared official statistics, advanced performance measures, era or park context, availability, and high-leverage impact, using current material from Major League Baseball, FanGraphs and the linked official or research references. Each contender was scored independently on the same five-part scorecard: Peak 30%, Consistency 20%, Impact 20%, Complete game 15%, Big moments 15%. The weighted total determines the published order from highest to lowest; criterion strengths are not assigned by rank position, and verified community voting can make a limited, visible adjustment.

01Peak
30
02Consistency
20
03Impact
20
04Complete game
15
05Big moments
15

HOW ALL FIVE SCORED

The five criteria create the AI baseline. The community adjustment is then added or subtracted to produce the current published score.

Keep the criteria fixedSwipe to compare all five →
Criterion#1Aroldis Chapman#2Mason Miller#3Edwin Diaz#4Cade Smith#5Andres Munoz
9597908689
9289938387
9591919184
9489889184
9390889284
AI baseline scoreWeighted criteria result94.092.090.288.086.1
Community adjustmentVote-share influence0.00.00.00.00.0
Current published scoreBaseline + community9492908886
#1

Aroldis Chapman

94/100
AI baseline94.0
Community0.0
Published94
#2

Mason Miller

92/100
AI baseline92.0
Community0.0
Published92
#3

Edwin Diaz

90/100
AI baseline90.2
Community0.0
Published90
#4

Cade Smith

88/100
AI baseline88.0
Community0.0
Published88
#5

Andres Munoz

86/100
AI baseline86.1
Community0.0
Published86
Peak · 30%Best-season or current high-end performance for the topic.
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