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Chase Petty

2026
Reds· RHP · throws R· 31.2 IP· 4.83 ERA· 1.26 WHIP· 139 batters faced
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Grade

His grade shows how good he has been, and at what.
Fbetter than 15% of qualified pitchers at limiting bases
RelieverCommand Artist

Rarely walks anyone and lets the defense work.

Petty allows more bases than most pitchers

The simulator expects him to allow 0.479 bases per batter faced, better than 15% of qualified pitchers. His best skill is limiting walks (72nd percentile). His weakest skill is getting strikeouts (3rd percentile). Short relief outings push strikeout rates up a little, so read his K% spoke with that in mind.

His grade rests on 139 batters faced, with data through 2026-09-27.

How to read this chart
Each spoke is a skill estimate adjusted for sample size, not a raw season stat, and farther out is better. A ↓ marks a stat where a lower number is better, and its spoke is flipped so farther out still means better. The middle ring marks the league median and the outer ring the league best. Percentiles compare him with 517 qualified pitchers, those with 100+ batters faced, starters and relievers together.

Plays like…

Each of these pitchers shares his archetype and sits closest to him in xEB/PA. Pick one to see him side by side with Chase Petty.

Chris PaddackRangersSammy PeraltaAngelsMitch KellerPiratesJustin TopaYankees

Pitcher type

This map shows what kind of pitcher he is, next to the league.

Pitcher type

He lands in the “Limits hard contact, pitches to contact” corner of the map.

League best:K% − BB% Jacob Misiorowski (26.8%)Hard-hit% allowed Blake Snell (29.0%)

How to read this chart
Two skills separate pitching styles: strikeout rate minus walk rate, where higher is better, and hard-hit rate allowed, where lower is better. The hard-hit axis is flipped, so the best corner is the top right. Each dot is a pitcher with 80+ batters faced this season, sized by batters faced. The dashed lines are the league median on each skill, and the league best on each is named above the chart. Click any dot to open that pitcher's page.
 Chase PettyLeague medianPercentile
Bases per ball in play(lower = better).510.527—
Walk rate(lower = better)8%9%72nd
Strikeout rate(higher = better)16%22%3rd

A higher percentile is better, and the 99th is the top of the league.

Arsenal

These cards show what he throws and what each pitch does.

Chase Petty mixes his sinker (34%) and changeup (23%). His best pitch has been the four-seam fastball, saving 6.4 bases per 100 thrown against league average.

Pitch mix & swing-and-miss

+6 bases better than a replacement arm this season

He allowed about 67 estimated bases, against a replacement arm's 73 over the same batters faced.

Replacement level is per-batter and can't be split by pitch type, so the bars below use league average.

All pitches

He cost 3.1 bases against league average across 433 pitches, or 0.7 per 100 pitches.

Sinker
34%
96.2 mph · RHP median 94.7
9% whiffs · Lg median 13%
cost 1.5 per 1002.5 total
Changeup
23%
87.4 mph · RHP median 87.1
33% whiffs · Lg median 30%
cost 3.3 per 1003.6 total
Sweeper
18%
83.2 mph · RHP median 83.5
32% whiffs · Lg median 31%
cost 1.7 per 1001.5 total
Four-Seam Fastball
15%
96.9 mph · RHP median 95.1
18% whiffs · Lg median 21%
saved 6.4 per 1004.5 total
Slider
not charted
9%
89.3 mph · RHP median 86.9
—
—

His slider isn't in the charts below, because only 44 of them were tracked with velocity and movement data this season.

How to read this chart
Each row is a pitch he throws at least 3% of the time, from pitch tracking in the regular season. The bar is how often he throws it, then its average velocity and its whiff rate, the share of swings that miss. Beside the velocity and the whiff rate is the median for that pitch, among pitchers of his hand for velocity and across the league for whiffs. More whiffs are better for a pitcher, while usage and velocity describe how he pitches. The Bases vs average bars score each pitch against a league-average pitch in the same count, and a bar to the left (saved) is better.

Mix by batter side

Sinker
29% vs LHH · RHP median 16%
40% vs RHH · RHP median 33%
Changeup
33% vs LHH · RHP median 30%
12% vs RHH · RHP median 12%
How to read this chart
Each row shows how often he throws a pitch to left-handed hitters (LHH) and right-handed hitters (RHH), next to the median for pitchers of his hand (RHP median). Medians come from right-handed pitchers who throw that pitch at least 3% of the time. Between 114 and 213 of them qualify, depending on the pitch. A mix is a plan, so a higher or lower share is neither better nor worse. Overall results by batter side are under Platoon splits.

Chase Petty's pitch movement, 2026

Chase Petty's pitch movement, 2026-12012012in← glove sidearm side →more risemore drop
SinkerSI
Rise 8.9 in
+0.6 vs Lg median
Break 15.9 in
+0.7 vs Lg median
Vs. early season changed
ChangeupCH
Rise −1.2 in
−5.3 vs Lg median
Break 14.1 in
−0.1 vs Lg median
Vs. early season changed
SweeperST
Rise 1.2 in
+0.1 vs Lg median
Break −12.6 in
+1.2 vs Lg median
Vs. early season changed
Four-Seam FastballFF
Rise 13.5 in
−2.2 vs Lg median
Break 14.6 in
+6.9 vs Lg median
Vs. early season steady
Early season → nowLg medianNormal wobble around the dot
How to read this chart
Each dot is a pitch's current break in inches, averaged over his latest outings. Higher is more rise and further right is more arm-side break, and neither is better or worse. The faint trail runs from his early-season outings to the dot, and the soft halo shows how far normal noise can move it. League median is the small hollow ring, and a pitch marked * has none because too few pitchers throw it. The “changed” verdict removes a league-wide drift that the trail still shows, so a long trail can read as steady. The by-appearance chart below has the exact dates. More on the About page

By appearance

These charts follow his velocity, movement and mix from outing to outing.

These charts follow his velocity, movement and pitch mix one outing at a time, and each pitch keeps the same color in every chart. The velocity and movement charts also shade the middle of the league for scale. His slider isn't in these charts, because only 44 of them were tracked with velocity and movement data this season.

Platoon splits

This section splits his results against lefties and righties.

Platoon splits (EB/PA allowed)

He handles righty bats better than lefty bats, by 0.041 EB/PA allowed.

50% probable range: +0.033 to +0.049

vs LHB73 PA0.550

vs LHB: shrunk estimate 0.550 EB/PA, 50% probable range 0.529 to 0.570, based on 73 plate appearances. Raw (unshrunk) rate: 0.488 EB/PA. League median vs LHB: 0.451 EB/PA.

vs RHB66 PA0.508

vs RHB: shrunk estimate 0.508 EB/PA, 50% probable range 0.488 to 0.530, based on 66 plate appearances. Raw (unshrunk) rate: 0.492 EB/PA. League median vs RHB: 0.435 EB/PA.

0.4190.4610.5030.5450.587
← betterworse →
Below league medianAbove50% probable rangeHis raw rateMiddle half of the league

His split is about typical for a righty arm (median 0.042). He allows more than the league median against both sides.

How to read this chart
  • Each dot is his estimate against that side, with its 50% probable range as the bar. These are bases allowed, so lower is better.
  • The diamond is his raw rate, which small samples make noisy, so the simulator pulls the dot toward a more trustworthy value.
  • The dashed tick is the league median, and the shaded strip is the middle half of pitchers with 100 or more batters faced.
  • The two splits average back to his modeled overall EB/PA allowed, not the xEB/PA headline.
  • Tap or hover a mark for its number. LHB and RHB are left- and right-handed batters. More on the About page

Contact allowed

These cards show what hitters do when they make contact.

Batters go to the pull side off him most often, but they do the most damage up the middle.

Pull side and opposite field depend on which side each batter hits from, so this pools every hitter he faced.

Batted balls allowed

Every ball hit off Chase Petty this season is drawn where it landed.
hit · out
EBlowhigh
vs Kyle ManzardoHome run
104 mph · 31° · worth 3.8 bases
07/29 vs Guardians
vs Jordan WalkerHome run
112 mph · 30° · worth 3.8 bases
05/23 vs Cardinals
vs Daylen LileHome run
104 mph · 34° · worth 3.7 bases
08/07 vs Nationals
vs Seiya SuzukiHome run
113 mph · 23° · worth 3.5 bases
05/04 vs Cubs
vs Brice TurangHome run
106 mph · 26° · worth 3.2 bases
06/29 vs Brewers

Luck check

How to read this chart
Dot color is estimated bases (EB), what the contact was worth no matter what the defense did with it. Darker means more bases, so a dark hollow ring in the outfield is a crushed ball his defense ran down. Tap or hover a dot or a row to link the two, and use the ▶ links to watch a play on Baseball Savant.

Deserved vs. actual

Batters have been credited with about the bases their contact off Chase Petty deserved.

Deserved by the contact he allowed56
Actually credited to batters56

Both bars count 110 balls in play, with walks and strikeouts left out.

How to read this chart
Every ball in play is worth the bases its exit velocity, launch angle and direction usually produce. If batters were credited with more than that, his results have been unlucky, and fewer means lucky. BABIP against is the batting average on balls in play he allows, next to the league median.

ERA 4.83 · WHIP 1.26 · BABIP against 0.240 (Lg median 0.286)

Best games

These are his biggest outings this season.

Best games

These are his best outings this season, ranked by bases saved against a replacement arm.

Multi-season trends · Chase Petty

Compared with last season, his HR allowed% is down, his BB% is down and his K% is down.

Actual rates show what happened on the field, season by season.