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Jack Ralston

#79 - Relief Pitcher

Miami Marlins

Bats / Throws Right / Right
Date of Birth 8/13/1997 (29)
Height, Weight 6'6", 231 lb
Hometown Panorama City, CA

2026 Season Stats

Needs more playing time to qualify
MLB Rank MLB Average
Sv IP ERA WHIP K% BB%
0 3.0 0.00 0.67 18.2% 0.0%
214th 3
Sv
354th 44.0
IP
1st 4.24
ERA
2nd 1.35
WHIP
267th 22.5%
K%
1st 9.7%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
94.1 12.2% 41.5% - 9.8% 5.06 2.55
216th 94.6
FB MPH
157th 12.2%
SwStr%
1st 28.5%
CSW%
1st 51.1%
Str-ICR
353rd 4.7%
MTK%
79th 4.94
PLV
21st 3.51
PLA

Articles

8/24/2026Fantasy Baseball Relief Pitcher Roundup: 8/23Rick Graham

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Jack Ralston Overview

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team G GS IP W-L Sv Hld ERA WHIP xERA FIP xFIP PLA K% BB% H/9 HR/9 BABIP HR/FB% LOB% ICR% GB% SwStr% CSW% IPR% PLV
2026 MIA 2 0 3.0 0-0 0 1 0.00 0.67 0.92 1.75 3.35 2.55 18.2% 0.0% 6.0 0.00 .222 0.0% 100.0% - 66.7% 12.2% 41.5% 0.95 5.06
RP MLB Percentile 0 0 0 0-81 0 22 100 99 100 99 87 94 24 100 88 98 92 98 99 0 99 54 100 100 76
RP MLB AVG 35 2 44.0 2-2 3 6 4.24 1.35 4.24 4.23 4.28 3.51 22.5% 9.7% 8.3 1.12 .290 17.6% 72.6% 37.0% 43.6% 12.2% 28.5% 0.50 4.94
Career 2 0 3.0 0-0 0 1 0.00 0.67 0.92 1.75 3.35 2.55 18.2% 0.0% 6.0 0.00 .222 0.0% 100.0% - 66.7% 12.2% 41.5% 0.95 5.06

Jack Ralston Repertoire

2026 All
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Jack Ralston Game Log

Jack Ralston Standard

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Year Team G GS IP W-L QS Sv Hld P Strikes Balls TBF H 1B 2B 3B HR K BB HB WP
2026 MIA 2 0 3.0 0-0 0 0 1 41 32 9 11 2 2 0 0 0 2 0 0 0
RP MLB Percentile 0 0 0 0-81 0 0 22 0 0 100 0 100 100 99 45 98 0 100 81 74
RP MLB AVG 35 2 44.0 2-2 0 3 6 740 473 267 190 40 26 7 1 5 43 18 2 2
Career 2 0 3.0 0-0 0 0 1 41 32 9 11 2 2 0 0 0 2 0 0 0

Jack Ralston Advanced

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Year Team K% BB% AVG SLG OPS wOBA BABIP BACON xAVG xwOBA xBABIP xwoBACON EV FB EV LA xERA
2026 MIA 18.2% 0.0% .182 .182 .364 .162 .222 .222 .161 .150 .197 .184 77.6 66.6 4.1 0.92
RP MLB Percentile 24 100 92 99 100 100 92 97 97 100 99 100 100 100 94 100
RP MLB AVG 22.5% 9.7% .241 .391 .714 .315 .290 .320 .236 .316 .281 .360 87.7 89.2 13.3 4.24
Career 18.2% 0.0% .182 .182 .364 .162 .222 .222 .161 .150 .197 .184 77.6 66.6 4.1 0.92

Jack Ralston Pitch › Mix

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Year Team FF% (MPH) SI% (MPH) FC% (MPH) SL% (MPH) ST% (MPH) CB% (MPH) CH% (MPH) FS% (MPH) KN% (MPH) Fastball% Secondary%
2026 MIA4.9% (94.1)--34.2% (84.8)---61.0% (82.9)- 4.9% 95.1%
RP MLB Percentile 0 (37) - - 75 (28) - - - 99 (9) - 0.6% 99.2%
RP MLB AVG 38.3% (94.6) 26.5% (93.9) 20.2% (89.4) 25.7% (85.8) 21.2% (82.4) 16.2% (79.7) 17.2% (86.1) 17.9% (86.6) 32.8% (68.2) 48.4% 51.4%
Career4.9% (94.1)--34.2% (84.8)---61.0% (82.9)- 4.9% 95.1%

Jack Ralston Pitch › Results

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Year Team FF CSW% SI CSW% FC CSW% SL CSW% ST CSW% CB CSW% CH CSW% FS CSW% KN CSW% Fastball CSW% Secondary CSW%
2026 MIA50.0% (1)--57.1% (1)---32.0% (3)- 50.0% 41.0%
RP MLB Percentile 100 (0) - - 99 (93) - - - 84 (70) - 99.2% 99.4%
RP MLB AVG 27.0% (27) 27.3% (11) 26.6% (13) 29.9% (23) 28.2% (17) 26.9% (11) 21.6% (16) 23.0% (18) 22.0% (9) 27.8% 28.8%
Career50.0% (1)--57.1% (1)---32.0% (3)- 50.0% 41.0%

Jack Ralston Batted Ball › Contact

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Year Team GB% LD% FB% PU% SS% Pull% Cent% Oppo% Foul Str% PC% Fl&B% Solid% Brl% ICR%
2026 MIA 66.7% 0.0% 22.2% 11.1% 0.0% 66.7% 11.1% 22.2% 14.6% 100.0% 0.0% 0.0% 0.0% -
RP MLB Percentile 99 100 34 64 100 100 0 26 5 100 100 98 99 0
RP MLB AVG 43.6% 21.7% 24.6% 10.2% 34.7% 40.9% 33.8% 25.3% 18.2% 62.7% 24.6% 5.9% 6.9% 37.0%
Career 66.7% 0.0% 22.2% 11.1% 0.0% 66.7% 11.1% 22.2% 14.6% 100.0% 0.0% 0.0% 0.0% -

Jack Ralston Batted Ball › Outcomes

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Year Team AVG wOBA BABIP BACON xAVG xwOBA xBABIP xwoBACON EV FB EV LA HR/FB ICR% IPA%
2026 MIA .182 .162 .222 .222 .161 .150 .197 .184 77.6 66.6 4.1 0.0% - -
RP MLB Percentile 92 100 92 97 97 100 99 100 100 100 94 98 0 0
RP MLB AVG .241 .315 .290 .320 .236 .316 .281 .360 87.7 89.2 13.3 17.6% 37.0% 24.6%
Career .182 .162 .222 .222 .161 .150 .197 .184 77.6 66.6 4.1 0.0% - -

Jack Ralston Approach › Plate Discipline

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Year Team Zone% Str% Swing% O-Sw% Whiff% Foul Str% Con% Z-Con% O-Con% CS% SwStr% CSW% BIP% PLUS% IPR% Str-ICR
2026 MIA 43.9% 78.0% 48.8% 34.8% 25.0% 14.6% 75.0% 83.3% 62.5% 29.3% 12.2% 41.5% 22.0% 73.2% 0.95 -
RP MLB Percentile 43 100 63 73 47 5 47 61 30 100 54 100 96 100 100 100
RP MLB AVG 44.5% 63.8% 47.5% 31.8% 25.6% 18.2% 74.4% 83.9% 58.5% 16.4% 12.2% 28.5% 17.1% 58.4% 0.50 51.1%
Career 43.9% 78.0% 48.8% 34.8% 25.0% 14.6% 75.0% 83.3% 62.5% 29.3% 12.2% 41.5% 22.0% 73.2% 0.95 -

Jack Ralston Approach › Locations

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Year Team Zone% aLoc% x-mLoc% gLoc% hiLoc% y-mLoc% loLoc% iLoc% oLoc% mmLoc%
2026 MIA 43.9% 46.3% 36.6% 17.1% 31.7% 19.5% 48.8% 26.8% 36.6% 9.8%
RP MLB Percentile 43 97 0 0 27 86 87 25 11 98
RP MLB AVG 44.5% 34.5% 27.1% 38.4% 36.5% 22.9% 40.7% 29.8% 43.1% 6.6%
Career 43.9% 46.3% 36.6% 17.1% 31.7% 19.5% 48.8% 26.8% 36.6% 9.8%

Jack Ralston Approach › Counts

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Year Team Early% Behind% 2-Str% Early BIP% F-Str% TF-Str% ECS% 2-Str O-Sw% PAR%
2026 MIA 65.9% 0.0% 34.1% 7.4% 81.8% 81.8% 40.7% 28.6% 14.3%
RP MLB Percentile 99 100 92 1 100 100 100 68 12
RP MLB AVG 58.5% 12.1% 30.0% 14.4% 61.0% 50.2% 21.2% 26.8% 19.1%
Career 65.9% 0.0% 34.1% 7.4% 81.8% 81.8% 40.7% 28.6% 14.3%

Jack Ralston PLV

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team P PLV QP% AP% BP% Q-BP% MTK% HP HL PLA
2026 MIA 41 5.06 36.6% 29.3% 34.1% 2.4% 9.8% -1.5 0 2.55
RP MLB Percentile 0 76 0 100 77 77 0 61 53 94
RP MLB AVG 740 4.94 46.0% 17.4% 36.6% 9.3% 4.7% 0.7 0 3.51
Career 41 5.06 36.6% 29.3% 34.1% 2.4% 9.8% -1.5 0 2.55
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