Pitcher · 2026
Eduardo Rivera
- Age
- 23
- B/T
- L/L
- Height
- 6' 7"
- Weight
- 237 lb
- Number
- #99
- Born
- June 13, 2003 in San Juan, Puerto Rico
- MLB debut
- April 22, 2026
- Drafted
- 2021, round 11
- High school
- CADEST
- dbWAR
- .1 1 season(s)
- IP
- 10.0
- ERA
- 6.30
- FIP
- 4.19
- K/9
- 9.0
- FIP−
- 100 100 = avg
Eduardo Rivera is a starting pitcher for the Boston Red Sox. In 2026 he struck out 10 batters over 10.0 innings across 4 appearances, 3 of them starts, going 0-1. His ERA of 6.30 was 50.9% higher than the league average of 4.18. Stripping out defence, his 4.19 FIP suggests he pitched better than his ERA shows. He missed bats on 25.0% of swings (11.4% of every pitch he threw), walked 13.6% of the batters he faced and struck out 22.7%. His 0.1 dbWAR is built from that FIP rather than runs allowed, so it credits him for what he controls and not for the defence behind him.
League context
Percentile among qualified pitchers, 2026.
Platoon splits
How left- and right-handed hitters fare against him.
| Split | PA | AB | H | HR | BB | SO | AVG | OBP | SLG | wOBA | K% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| vs LHB | 20 | 15 | 1 | 0 | 5 | 5 | .067 | .300 | .067 | .225 | 25.0% |
| vs RHB | 24 | 23 | 7 | 1 | 1 | 5 | .304 | .333 | .522 | .368 | 20.8% |
Pitch sequencing
What Eduardo Rivera throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Eduardo Rivera throws in it.
Pitch arsenal
What he throws, how hard, and how often it misses in 2026.
| Four-Seam Fastball | 114 | 95.3 | 2,225 | 48.2% | 21.8% | |
| Slider | 65 | 87.8 | 2,302 | 46.2% | 25.0% | |
| Changeup | 31 | 86.9 | 1,175 | 45.2% | 35.3% |
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 4 | 3 | 10.0 | 0 | 1 | 0 | 8 | 7 | 10 | 6 | 6.30 | 4.19 | 1.40 | 9.0 | 5.4 | 151 | 100 | 0.1 | — |
Head to head
Put Eduardo Rivera beside up to three others.
wOBA uses linear weights measured from this season's own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page.