Jack Mahoney
P | Bats/Throws: R/R | 6' 3" 205LBS | Age: 23
Draft: 2023 | Rd: 3, #77, Colorado Rockies | South Carolina
MLB Pipeline Rank
W L ERA G GS SV IP SO WHIP
2024 1 1 5.33 6 5 0 25.1 24 1.42
Career Minors 6 7 3.98 25 22 0 122 118 1.22
G W-L ERA IP SO WHIP
2024 6 1-1 5.33 25.1 24 1.42
Career Minors 25 6-7 3.98 122 118 1.22

Standard Minor League Pitching Statistics

SeasonTmLGLWLERAGGSSVIPHRERHRBBSOWHIP
2023 ACL Rockies ACL ROK 0 0 9.00 2 0 0 2.0 3 2 2 1 1 3 2.00
2024 2 Teams Minors 6 7 3.90 23 22 0 120.0 115 55 52 10 30 115 1.21
2024 Fresno Grizzlies CAL A 5 6 3.52 17 17 0 94.2 87 40 37 6 22 91 1.15
2024 Spokane Indians NWL A+ 1 1 5.33 6 5 0 25.1 28 15 15 4 8 24 1.42

Scouting Report

draft

Video scouting report »

Scouting grades: Fastball: 55 | Slider: 55 | Changeup: 50 | Control: 50 | Overall: 45 

Mahoney thrived as a freshman at South Carolina in 2021, compiling a 1.62 ERA while reaching 96 mph with his fastball, but he blew out his elbow in May. He didn't pitch at all last season while recovering from Tommy John surgery, though he did homer twice in 16 at-bats as a third baseman. Back on the mound in 2023, he has been the Gamecocks' most effective starter and enticed scouts with his athleticism and three-pitch potential. 

Mahoney's fastball velocity has returned since his elbow reconstruction, as he's working at 92-95 mph and touching 97 with tailing action and carry. His mid-80s slider lacks reliability yet shows signs of becoming a solid pitch with horizontal and vertical break at its best. His changeup has similar velocity and inconsistency but has some interesting fade when it's on. 

A quality athlete who was also a star quarterback in high school, Mahoney repeats his delivery well and throws strikes. He doesn't miss as many bats as his pure stuff suggests he should because his command of the fastball and control of secondary pitches are still works in progress. The consensus is he'll get better with more experience and could develop into a mid-rotation starter. 


2024

Scouting grades: Fastball: 55 | Slider: 55 | Changeup: 50 | Control: 50 | Overall: 40

Mahoney started putting his name on the map for the 2023 Draft back in '21 with a dominant freshman year spent mostly in relief. But he became a question mark when he blew out his elbow that May and Tommy John surgery kept him off the mound for all of 2022. He was in the Gamecocks' rotation in 2023 and was their best starter, showcasing a three-pitch mix and athleticism on the mound that helped him land in the third round with the Rockies, who didn’t have him do much after signing following a heavy workload during the spring in his first year post-surgery.

A 6-foot-3 right-hander, Mahoney saw his stuff bounce back pretty well upon his return. It starts with a fastball that tops out at 97 mph and sits in the 92-95 range with late natural sink to it. His mid-80s slider can be inconsistent, but at its best, it has horizontal and vertical break. He throws his changeup with the same velocity, and when it’s on, it features good fade. He has the ability to get outs early in counts on the ground, as well as strike guys out.

Mahoney is a good athlete who quarterbacked his high school football team and even hit a couple of home runs in 2022 for South Carolina while he was rehabbing his elbow. He has a feel of what he wants to do on the mound, though he’ll need to keep refining his command and control of his repertoire. It’s a pretty good rotation piece starter kit, with perhaps a leap forward to come another year removed from the elbow surgery.


2023

Scouting grades: Fastball: 55 | Slider: 55 | Changeup: 50 | Control: 50 | Overall: 45 

Mahoney thrived as a freshman at South Carolina in 2021, compiling a 1.62 ERA while reaching 96 mph with his fastball, but he blew out his elbow in May. He didn't pitch at all last season while recovering from Tommy John surgery, though he did homer twice in 16 at-bats as a third baseman. Back on the mound in 2023, he was the Gamecocks' most effective starter and his athleticism and three-pitch potential enticed the Rockies to take him in the third round of the Draft, signing him for $925,000.

Mahoney's fastball velocity has returned since his elbow reconstruction, as he's working at 92-95 mph and touching 97 with tailing action and carry. His mid-80s slider lacks reliability yet shows signs of becoming a solid pitch with horizontal and vertical break at its best. His changeup has similar velocity and inconsistency but has some interesting fade when it's on. 

A quality athlete who was also a star quarterback in high school, Mahoney repeats his delivery well and throws strikes. He doesn't miss as many bats as his pure stuff suggests he should because his command of the fastball and control of secondary pitches are still works in progress. The consensus is he'll get better with more experience and could develop into a mid-rotation starter.



Awards




Transactions

Team Date Transaction
07/31/2024 RHP Jack Mahoney assigned to Spokane Indians from Fresno Grizzlies.
04/02/2024 RHP Jack Mahoney assigned to Fresno Grizzlies from ACL Rockies.
03/07/2024 Colorado Rockies Prospects activated RHP Jack Mahoney.
08/01/2023 RHP Jack Mahoney assigned to ACL Rockies.
07/16/2023 Colorado Rockies signed RHP Jack Mahoney.
03/26/2023 RHP Jack Mahoney assigned to South Carolina Gamecocks.
03/31/2022 RHP Jack Mahoney and assigned to South Carolina Gamecocks.