Jonathan Loáisiga
AZ • P • Throws R • 2026 Season
Yahoo eligible: RP
Value
Standard score (σ), not a percentile, vs all qualified pitchers — 0 = average, +1 = one standard deviation above the mean. Built from 5x5 category z-scores (like Baseball Monster).
Control & Efficiency
Strike-throwing and length profile — drives the Likely-QS / High-K/BB start flags. The bar under each stat is this pitcher's percentile vs 207 qualified MLB starters (100th = best — already direction-adjusted, so a low BB% or P/PA scores high).
Arsenal
Throwing hand and pitch mix (share of pitches thrown) — the traits the matchup ratings below weigh against each opponent's splits.
Primary pitch: Sinker (52%)
Season Stats
The big number is the actual stat. The bar below it is this pitcher's percentile vs 385 qualified MLB pitchers (≥30 IP) this season — 100th = best, direction-adjusted (a low ERA/WHIP/BB scores high).
Splits & Tendencies
How this pitcher fares by batter hand, venue, opponent lineup quality (elite→poor offenses), and over the last 30 days. Lower ERA/WHIP is better; OPS-against shows for the hand/venue splits. Hover a tag for the numbers.
| Split | IP | ERA | WHIP | K/9 | BB/9 | OPS-agst |
|---|---|---|---|---|---|---|
| vs LHB | 22.1 | — | 1.57 | 6.9 | 3.2 | .830 |
Luck Factor
How much this pitcher's results are outrunning or trailing the quality of what actually happened — league-relative. Hover a meter for the inputs.
Game Log (48 games)
| Date | Opp | Dec | IP | H | R | ER | BB | SO | HR | P |
|---|---|---|---|---|---|---|---|---|---|---|
| Aug 4 | vs San Diego Padres | - | 1 | 2 | 1 | 1 | 1 | 0 | 0 | 12 |
| Aug 1 | @ Cleveland Guardians | - | 1 | 2 | 1 | 1 | 0 | 0 | 0 | 18 |
| Jul 31 | @ Cleveland Guardians | W | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 17 |
| Jul 27 | @ Pittsburgh Pirates | - | 1 | 2 | 1 | 1 | 0 | 1 | 0 | 18 |
| Jul 26 | @ Washington Nationals | L | 1 | 2 | 2 | 2 | 0 | 1 | 1 | 16 |
| Jul 22 | vs Athletics | - | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 8 |
| Jul 20 | vs Athletics | - | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 10 |
| Jul 18 | vs St. Louis Cardinals | - | 0.2 | 1 | 0 | 0 | 1 | 1 | 0 | 15 |
| Jul 12 | @ Los Angeles Dodgers | - | 1 | 0 | 0 | 0 | 1 | 2 | 0 | 23 |
| Jul 10 | @ Los Angeles Dodgers | - | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 18 |
| Jul 7 | @ San Diego Padres | - | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 16 |
| Jul 4 | vs Milwaukee Brewers | - | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 15 |
| Jul 3 | vs Milwaukee Brewers | - | 1.2 | 1 | 0 | 0 | 0 | 1 | 0 | 21 |
| Jul 1 | vs San Francisco Giants | - | 1 | 2 | 0 | 0 | 0 | 1 | 0 | 16 |
| Jun 28 | @ Tampa Bay Rays | - | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 12 |
| Jun 24 | @ St. Louis Cardinals | - | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 16 |
| Jun 22 | @ St. Louis Cardinals | - | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
| Jun 19 | vs Minnesota Twins | W | 1.1 | 0 | 0 | 0 | 0 | 0 | 0 | 10 |
| Jun 15 | vs Los Angeles Angels | - | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 8 |
| Jun 12 | @ Cincinnati Reds | - | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 11 |
| Jun 10 | @ Miami Marlins | - | 1 | 2 | 1 | 1 | 0 | 0 | 0 | 6 |
| Jun 6 | vs Washington Nationals | - | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 17 |
| Jun 3 | vs Los Angeles Dodgers | - | 0.1 | 0 | 0 | 0 | 0 | 1 | 0 | 5 |
| Jun 2 | vs Los Angeles Dodgers | - | 1 | 3 | 2 | 2 | 2 | 1 | 0 | 23 |
| May 31 | @ Seattle Mariners | L | 0.1 | 1 | 1 | 0 | 1 | 0 | 0 | 4 |
| May 29 | @ Seattle Mariners | - | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 16 |
| May 25 | @ San Francisco Giants | - | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 14 |
| May 19 | vs San Francisco Giants | W | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 10 |
| May 18 | vs San Francisco Giants | - | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 17 |
| May 16 | @ Colorado Rockies | - | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 13 |
| May 8 | vs New York Mets | - | 0.2 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
| May 5 | vs Pittsburgh Pirates | - | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 15 |
| May 2 | @ Chicago Cubs | - | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
| Apr 30 | @ Milwaukee Brewers | - | 0.2 | 1 | 1 | 1 | 1 | 1 | 0 | 17 |
| Apr 26 | vs San Diego Padres | - | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 16 |
| Apr 25 | vs San Diego Padres | - | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 18 |
| Apr 23 | vs Chicago White Sox | - | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
| Apr 21 | vs Chicago White Sox | - | 1.1 | 1 | 0 | 0 | 1 | 2 | 0 | 27 |
| Apr 17 | vs Toronto Blue Jays | - | 1 | 3 | 1 | 1 | 0 | 1 | 0 | 15 |
| Apr 13 | @ Baltimore Orioles | L | 0.2 | 1 | 2 | 2 | 1 | 0 | 1 | 19 |
| Apr 12 | @ Philadelphia Phillies | - | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 9 |
| Apr 10 | @ Philadelphia Phillies | - | 1 | 0 | 0 | 0 | 0 | 3 | 0 | 15 |
| Apr 7 | @ New York Mets | - | 1 | 2 | 1 | 1 | 0 | 1 | 0 | 21 |
| Apr 5 | vs Atlanta Braves | - | 1 | 3 | 1 | 1 | 0 | 1 | 0 | 25 |
| Apr 4 | vs Atlanta Braves | - | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 10 |
| Apr 1 | vs Detroit Tigers | - | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 16 |
| Mar 28 | @ Los Angeles Dodgers | - | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 18 |
| Mar 27 | @ Los Angeles Dodgers | - | 1.1 | 0 | 0 | 0 | 0 | 1 | 0 | 14 |