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Jonathan Loaisiga
RP · 
Arizona Diamondbacks · #43
Bats/ThrowsR/R
Height5' 11"
Weight195 lbs
BirthplaceManagua, Nicaragua
MLB Debut2017
🪪Bio
Bats/ThrowsR/R
Height5' 11"
Weight195 lbs
BirthplaceManagua, Nicaragua
MLB Debut2017
📊Season Stats (2026)
ERA2.43
W-L7-3
IP59.1
K44
WHIP1.01
SV1
Full Stat Line
G61
GS0
QS0
HLD10
H49
ER16
HR3
BB11
K/96.67
WAR1.43
🤚Career Splits by Handedness
vs Left-Handed Batters
AVG.267
OBP.297
SLG.430
OPS.727
vs Right-Handed Batters
AVG.169
OBP.195
SLG.181
OPS.376
Career totals from real plate-appearance data — lower OPS allowed is better for a pitcher.
⚔️This Season vs. Each Opponent
| Opponent | ERA | IP | K | BB | Opp AVG |
|---|---|---|---|---|---|
vs. LAD
|
4.05 | 6.2 | 10 | 3 | .280 |
vs. SF
|
0.00 | 6.0 | 3 | 0 | .182 |
vs. SD
|
1.69 | 5.1 | 3 | 1 | .167 |
vs. PHI
|
0.00 | 4.0 | 4 | 0 | .000 |
vs. MIL
|
2.70 | 3.1 | 3 | 1 | .250 |
vs. ATL
|
3.00 | 3.0 | 1 | 0 | .250 |
vs. BOS
|
0.00 | 3.0 | 0 | 0 | .222 |
vs. CIN
|
0.00 | 2.0 | 2 | 0 | .143 |
vs. CLE
|
4.50 | 2.0 | 1 | 1 | .250 |
vs. HOU
|
4.50 | 2.0 | 4 | 0 | .400 |
vs. OAK
|
0.00 | 2.0 | 2 | 0 | .143 |
vs. PIT
|
4.50 | 2.0 | 1 | 0 | .250 |
vs. STL
|
0.00 | 2.0 | 2 | 1 | .143 |
vs. WSH
|
9.00 | 2.0 | 2 | 1 | .286 |
vs. CHW
|
0.00 | 1.2 | 2 | 1 | .167 |
vs. NYM
|
5.40 | 1.2 | 1 | 0 | .333 |
vs. MIN
|
0.00 | 1.1 | 0 | 0 | .000 |
vs. SEA
|
0.00 | 1.1 | 1 | 1 | .250 |
vs. COL
|
0.00 | 1.0 | 0 | 0 | .333 |
vs. DET
|
0.00 | 1.0 | 0 | 0 | .500 |
vs. KC
|
0.00 | 1.0 | 0 | 0 | .000 |
vs. LAA
|
0.00 | 1.0 | 0 | 0 | .000 |
vs. MIA
|
9.00 | 1.0 | 0 | 0 | .500 |
vs. TB
|
0.00 | 1.0 | 1 | 0 | .250 |
vs. TOR
|
9.00 | 1.0 | 1 | 0 | .600 |
vs. BAL
|
27.00 | 0.2 | 0 | 1 | .333 |
vs. CHC
|
0.00 | 0.1 | 0 | 0 | .000 |
🏟️This Season at Each Ballpark
| Ballpark | ERA | IP | K | BB | Opp AVG |
|---|---|---|---|---|---|
| Total | 2.43 | 59.1 | 44 | 11 | .229 |
| Chase Field | 2.03 | 26.2 | 19 | 6 | .255 |
| Dodger Stadium | 0.00 | 4.1 | 6 | 1 | .071 |
| AT&T Park | 0.00 | 3.0 | 2 | 0 | .100 |
| Fenway Park | 0.00 | 3.0 | 0 | 0 | .222 |
| Citizens Bank Park | 0.00 | 2.0 | 3 | 0 | .000 |
| Minute Maid Park | 4.50 | 2.0 | 4 | 0 | .400 |
| Progressive Field | 4.50 | 2.0 | 1 | 1 | .250 |
| Busch Stadium II | 0.00 | 1.1 | 1 | 0 | .000 |
| Safeco Field | 0.00 | 1.1 | 1 | 1 | .250 |
| Citi Field | 9.00 | 1.0 | 1 | 0 | .500 |
| Coors Field | 0.00 | 1.0 | 0 | 0 | .333 |
| Great American | 0.00 | 1.0 | 1 | 0 | .000 |
| Kauffman Stadium | 0.00 | 1.0 | 0 | 0 | .000 |
| Marlins Park | 9.00 | 1.0 | 0 | 0 | .500 |
| Nationals Park | 18.00 | 1.0 | 1 | 0 | .400 |
| PETCO Park | 0.00 | 1.0 | 0 | 0 | .000 |
| PNC Park | 9.00 | 1.0 | 1 | 0 | .400 |
| Tropicana Field | 0.00 | 1.0 | 1 | 0 | .250 |
| Camden Yards | 27.00 | 0.2 | 0 | 1 | .333 |
| Wrigley Field | 0.00 | 0.1 | 0 | 0 | .000 |
📅By Month & Recent Form
| Split | ERA | IP | K | BB | Opp AVG |
|---|---|---|---|---|---|
| Last 7 Days | 2.25 | 4.0 | 4 | 0 | .250 |
| Last 15 Days | 1.29 | 7.0 | 7 | 0 | .160 |
| Last 30 Days | 0.75 | 12.0 | 8 | 0 | .171 |
| March | 0.00 | 2.1 | 2 | 0 | .125 |
| April | 4.50 | 12.0 | 10 | 3 | .298 |
| May | 0.00 | 7.1 | 1 | 1 | .167 |
| June | 3.00 | 9.0 | 6 | 3 | .207 |
| July | 2.19 | 12.1 | 13 | 3 | .217 |
| August | 2.19 | 12.1 | 8 | 1 | .227 |
| September | 2.25 | 4.0 | 4 | 0 | .250 |
🎯Pitch Arsenal (2026)
| Type | Pitches | Usage% | Zone% | Chase% | Whiff% | BA | wOBA | xwOBA |
|---|---|---|---|---|---|---|---|---|
| Sinker | 300 | 34.7% | 44.3% | 31.4% | 14.1% | .235 | .263 | .265 |
| Changeup | 236 | 27.3% | 25.4% | 45.0% | 30.8% | .233 | .304 | .254 |
| 4-Seam Fastball | 141 | 16.3% | 33.3% | 30.8% | 21.1% | .167 | .203 | .107 |
| Curveball | 133 | 15.4% | 22.6% | 40.5% | 29.7% | .214 | .219 | .258 |
| Cutter | 48 | 5.5% | 56.3% | 16.0% | 16.0% | .273 | .277 | .342 |
| 2-Seam Fastball | 7 | 0.8% | 0.0% | — | — | .500 | — | — |
🌀Pitch Movement (2026)
| Type | # | Velo | Spin | IVB | H-Break | Ext |
|---|---|---|---|---|---|---|
| Sinker | 174 | 97.9 | 2,308 | +6.7" | +1.4" | 6.4 |
| Changeup | 124 | 91.2 | 1,786 | +4.4" | +1.4" | 6.4 |
| 4-Seam Fastball | 92 | 97.7 | 2,401 | +12.6" | +0.8" | 6.3 |
| Curveball | 63 | 89.8 | 2,646 | +0.6" | -0.3" | 6.3 |
| Cutter | 36 | 95.8 | 2,439 | +8.2" | +0.2" | 6.4 |
IVB = induced vertical break (gravity removed) · H-Break = horizontal movement · Ext = release extension in feet.
📋Recent Game Log
| Date | Opp | Score | IP | H | ER | BB | K | ERA | PC | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W | Tuesday, September 8, 2026 |
KC
|
5-3 | 1.0 | 0 | 0 | 0 | 0 | 2.43 | 12 | — |
| W | Sunday, September 6, 2026 |
HOU
|
3-2 | 1.0 | 3 | 1 | 0 | 2 | 2.47 | 19 | — |
| W | Saturday, September 5, 2026 |
HOU
|
4-3 | 1.0 | 1 | 0 | 0 | 2 | 2.35 | 17 | W |
| W | Wednesday, September 2, 2026 |
PHI
|
0-1 | 1.0 | 0 | 0 | 0 | 0 | 2.40 | 15 | W |
| L | Monday, August 31, 2026 |
PHI
|
2-1 | 1.0 | 0 | 0 | 0 | 1 | 2.44 | 14 | — |
| W | Friday, August 28, 2026 |
SF
|
10-6 | 1.0 | 0 | 0 | 0 | 1 | 2.48 | 10 | — |
| L | Thursday, August 27, 2026 |
SF
|
1-6 | 1.0 | 0 | 0 | 0 | 1 | 2.53 | 9 | — |
| W | Sunday, August 23, 2026 |
CIN
|
3-5 | 1.0 | 1 | 0 | 0 | 1 | 2.58 | 12 | W |
| W | Wednesday, August 19, 2026 |
BOS
|
7-6 | 2.0 | 1 | 0 | 0 | 0 | 2.63 | 16 | W |
| L | Tuesday, August 18, 2026 |
BOS
|
4-9 | 1.0 | 1 | 0 | 0 | 0 | 2.74 | 9 | — |
👥Team — Arizona Diamondbacks
| Player | Pos | Key Stat |
|---|---|---|
| Tyler Locklear | 1B | .278 AVG |
| Tim Tawa | 1B | .247 AVG |
| Ildemaro Vargas | 1B | 4.91 ERA |
| Ketel Marte | 2B | .251 AVG |
| Nolan Arenado | 3B | .236 AVG |
| James McCann | C | 11.25 ERA |
| Gabriel Moreno | C | .299 AVG |
| Jordan Lawlar | CF | .258 AVG |
| Ryan Waldschmidt | CF | .263 AVG |
| Adrian Del Castillo | DH | 5.40 ERA |
| Jose Fernandez | DH | .262 AVG |
| Lars Nootbaar | DH | .236 AVG |
| Luken Baker | First Baseman | .200 AVG |
| Lourdes Gurriel Jr. | LF | .207 AVG |
| Max Kepler | LF | .205 AVG |
| Tommy Troy | LF | .222 AVG |
| Andrew Hoffmann | Relief Pitcher | 7.71 ERA |
| Corbin Carroll | RF | .240 AVG |
| Juan Burgos | RP | 2.08 ERA |
| Gerardo Carrillo | RP | 4.15 ERA |
| Taylor Clarke | RP | 2.45 ERA |
| Brandyn Garcia | RP | 2.08 ERA |
| Kevin Ginkel | RP | 3.98 ERA |
| Drey Jameson | RP | 5.12 ERA |
| Derek Law | RP | 1.23 ERA |
| Justin Martinez | RP | 0.00 ERA |
| Juan Morillo | RP | 2.33 ERA |
| Brandon Pfaadt | RP | 3.53 ERA |
| Dennis Santana | RP | 5.36 ERA |
| Kade Strowd | RP | 3.38 ERA |
| Ryan Thompson | RP | 4.43 ERA |
| Mitch Bratt | SP | 4.70 ERA |
| Corbin Burnes | SP | 0.00 ERA |
| Jose Cabrera | SP | 4.33 ERA |
| Kohl Drake | SP | 6.53 ERA |
| Zac Gallen | SP | 6.22 ERA |
| Merrill Kelly | SP | 5.06 ERA |
| Zack Littell | SP | 5.21 ERA |
| Eduardo Rodriguez | SP | 2.55 ERA |
| Michael Soroka | SP | 3.53 ERA |
| Blake Walston | SP | 3.00 ERA |
| Geraldo Perdomo | SS | .250 AVG |
| Ryne Nelson | Starting Pitcher | 4.97 ERA |
See the Full Analysis
Key Suspects, player props, DFS rankings, and matchup intelligence for Jonathan Loaisiga and every MLB game — available in the BlowOutAlert workspace.