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MLB Deserve-to-Win
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Leo Rivas

2026
Mariners· 1.0 IP· 63.00 ERA· 10.00 WHIP· 13 BF

Grade

How good he's been, and at what

Too few batters faced to grade

Leo Rivas has faced 13 batters this season. A rate built on that few swings wildly on a single result, so this page shows no grade and no comparison to the league average or the league best — there is nothing here those numbers could honestly be put next to.

The bar is 40 batters faced, the same pool every league average and percentile on this site is measured over. What follows is what actually happened, with no grade attached to it.

Arsenal

What he throws, and what it does

Pitch mix & swing-and-miss

Eephus
not charted
100%
39.0 mph
—

None of his pitches are in the charts below — too few of each were tracked this season.

How to read this chart
What they throw, how hard, and what misses bats — from pitch tracking, regular season only.

Contact allowed

What hitters do when they connect

Batters go up the middle off him most often, but the hardest contact goes to the pull side.

Pull and oppo are relative to each batter's stance, so this pools all the hitters he faced.

Batted balls allowed

Where every ball hit off Leo Rivas landed this season.
hit · out
EBlowhigh
vs Luis LaraHome run
EV 98 mph · LA 30° · EB 3.3
08/18 vs Brewers
vs William ContrerasDouble
EV 103 mph · LA 30° · EB 2.0
08/18 vs Brewers
vs Jonathan OrnelasSingle
EV 97 mph · LA 24° · EB 1.7
08/18 vs Brewers
vs Joey OrtizSingle
EV 93 mph · LA 14° · EB 1.1
08/18 vs Brewers
vs Christian YelichSingle
EV 103 mph · LA 14° · EB 0.7
08/18 vs Brewers

Luck check

Burned 2 times — balls with a hit probability under 20% that found grass anyway.

vs Brandon LockridgeSingleCheap hit
EV 91 mph · LA -3° · EB 0.1 · xBA .103
08/18 vs Brewers
How to read this chart
Dot color is estimated bases (EB) — what the contact was worth, regardless of what the defense did with it. 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.

Best games

His biggest outings this year

Best games

His best outings this season by bases saved vs a replacement arm.