DataBaseball
2026
Rogelio Armenteros headshot

Pitcher · 2019

Rogelio Armenteros

Age
25
B/T
R/R
Height
6' 1"
Weight
244 lb
Born
June 30, 1994 in Havana, Cuba
MLB debut
June 14, 2019
dbWAR
.4
1 season(s)
IP
18.0
ERA
4.00
FIP
2.77
K/9
9.0
FIP−
61
100 = avg

Rogelio Armenteros is a relief pitcher for the Houston Astros. In 2019 he struck out 18 batters over 18.0 innings across 5 appearances, going 1-1. His ERA of 4.00 was 11.2% lower than the league average of 4.51. Stripping out defence, his 2.77 FIP suggests he pitched better than his ERA shows. He missed bats on 25.2% of swings (11.7% of every pitch he threw), walked 6.7% of the batters he faced and struck out 24.0%. His 0.4 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, 2019.

FIP2.77
K/99.0
WHIP1.22
WAR.4

Pitching

Standard and advanced, by season.

Trend
20195218.01111781854.002.771.229.02.589610.4

Platoon splits

How left- and right-handed hitters fare against him.

Opponent batting by the side the hitter bats from, 2019. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB343310018.303.324.333.28723.5%
vs RHB413771410.189.268.297.25324.4%

Pitch sequencing

What Rogelio Armenteros throws in each count, and what he follows each pitch with. Select any cell for the breakdown.

ShowBatter
Four-seamChangeupCurveballSlider

Select a count to see exactly what Rogelio Armenteros throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2019.

Four-Seam Fastball48.3%16190.92,00547.2%23.0%
Changeup28.5%9582.71,52143.2%30.6%
Curveball19.8%6678.82,26548.5%24.1%
Slider3.3%1184.32,32327.3%0.0%
Rogelio Armenteros's arsenal by usage. Velocity is average release speed in mph, spin in rpm, and whiff rate is misses per swing — the cleanest single measure of whether a pitch beats hitters.

Head to head

Put Rogelio Armenteros beside up to three others.

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Rogelio Armenteros
How these are computed

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.