Graduated from Monsignor Farrell High School in Staten Island, N.Y....earned All-State honors as a senior, posting a 0.76 ERA while striking out 69 batters through 55 innings...Remained in New York for college, playing three seasons at Manhattan University...in his junior year (2017), led the Metro Atlantic Athletic Conference (MAAC) and ranked 48th nationally with 105 strikeouts on the year (84.1 IP), which also matched Manhattan’s single-season record...his 225 career strikeouts rank sixth in Manhattan program history...Was selected by the Padres in the 12th round of the 2017 MLB First-Year Player Draft...became the 16th player in Manhattan’s history to be selected in the MLB First-Year Player Draft...His father, also named Tom, lived in Bronx, N.Y., for 40 years but was ironically a Mets fan, despite living mere miles away from Yankee Stadium...thanks to his father, the younger Tom grew up as a Mets fan...
the younger Tom, who grew up in Staten Island and stayed in New York for college, cites New York’s food scene as what he misses most about his hometown...Underwent Tommy John surgery in September 2019 and arrived in Spring Training for the 2020 season five months into his rehab...because he had a medical exemption, he remained at the Padres complex in Peoria, Ariz., while the majority of camp was sent home due to the COVID-19 pandemic...he was among a group of around just five players who remained isolated in camp while the pandemic’s damage unfolded, especially in his hometown of New York: “It was a weird time. But we got through it,” he told the San Diego Union-Tribune in 2023...Following his recovery from Tommy John surgery, Cosgrove, who was a starter throughout his collegiate career and the first three seasons of his pro career, transitioned to a reliever...Was signed by the Astros to a minor league contract with an invite to Major League camp on Feb. 3, 2026.
2025
Began the season at the Triple-A El Paso in the Padres system...was traded to the Cubs on April 10, spending the bulk of his season with Triple-A Iowa...Went a combined 5-1 with a 4.53 ERA (25ER/49.2IP), 57 strikeouts, and a .246 opponent batting average in 44 appearances at the Triple-A level, including 40 with Triple-A Iowa...Also made two appearances over two stints at the Major League level with the Cubs, posting a 2.52 ERA (1ER/4IP) with three strikeouts...Was designated for assignment by the Cubs on Aug. 31 and was eventually outrighted to Triple-A Iowa on Sept. 3.
2024
Allowed multiple runs four times in his 18 outings for SD in 2024, including career highs in ER (6), hits (5) and home runs (2) on March 30 vs. SF...allowed two ER just three times in his 54 appearances during his rookie 2023 campaign, and his three HR allowed in ’24 matched his three long balls allowed in ‘23...His 83.9 mph average exit velocity in 2023 ranked in the 100th percentile league-wide, and while he didn't pitch enough in '24 to qualify, his 86.6 mph average exit velocity was south of the league average (88.5 mph)…Made his first career Opening Day roster and recorded 18 appearances across four separate stints with the Padres...15 of his 18 outings on the season came from March 20-April 29, and he was scored upon in six of those 15 appearances (10.50 ERA, 1.83 WHIP, .327 AVG)...optioned to Triple-A El Paso on April 30...Recalled on June 21, and allowed a combined five ER across three outings from June 21-26 (16.88 ERA, 2.63 WHIP, .462 AVG)… placed on the 15-day IL (left elbow inflammation) on June 28 before being reinstated on July 25 and sent back to ELP...Recalled from ELP twice in Sept. 1 but did not make an appearance...Allowed multiple runs four times in his 18 outings for SD in 2024, including career highs in ER (6), hits (5) and home runs (2) on March 30 vs. SF...allowed two ER just three times in his 54 appearances during his rookie 2023 campaign, and his three HR allowed in ’24 match his three long balls allowed in ‘23...Despite opponents hitting .354 (14.11 H/9 IP) against him, his 86.6 mph average exit velocity was south of the league average (88.5 mph).
2023
Had his contract selected and was added to the Padres’ 40-man roster in the offseason on Nov. 15, 2022...Among qualifying Major League rookie relievers, he ranked first in ERA (1.75) and opponents’ AVG (.173)...Posted the fourth-most appearances out of the SD 'pen (54), which ranked third among all NL rookies, behind only ARI’s Scott McGough (63) and CIN’s Fernando Cruz (58)...The 54 appearances were the most by a Padres’ rookie since Jose Torres’ 62 in 2017...Posted a franchise-record 14 consecutive scoreless appearances to begin his career from April 29-June 11, with the streak snapped in the eighth inning on June 11 @ COL, surrendering a game-tying solo HR to Ryan McMahon...the 15.0 consecutive scoreless IP was fifth longest scoreless-inning streak by a reliever to begin a career in SD history (excluding starts), trailing only Eric Show in '82 (18.1 IP), Tim Stauffer in '10 (17.1), Kevin Cameron in '07, (17.1) & Jeremy Fikac in '01 (16.0)...The 14 consecutive scoreless appearances and 15.0 straight scoreless IP were both the longest streaks by an SD reliever in ’23, ahead of Hader’s and Steven Wilson’s 13 appearances and Wilson’s 14.0 IP...Had reverse splits, limiting right-handed hitters to a .131 AVG while lefties hit .236...it’s the second-lowest opponent AVG in a single season by a LHP vs. RHH since 2015 (min .120 batters faced), when NYY’s Andrew Miller also posted a .131 opp. AVG vs. RHH...since ‘15, Cosgrove and Miller trail only Josh Hader’s .125 clip vs. RHH in ‘21 w/ MIL...Posted a 1.96 ERA @ home vs. 1.59 ERA on the road...was one of only five ML relievers and one of just two in the NL to own a sub-2.00 ERA in both home and away parks (min. 25 appearances in each), joining LAD’s Brusdar Graterol, BOS’ Chris Martin, HOU’s Hector Neris and TOR’s Tim Mayza...Threw his slider more than half the time at 52.2% with opponents hitting .153 (15-98) against it...the pitched averaged 19.4 inches of horizontal break, tops among all pitchers who threw at least 100 sliders, and Tom threw 437 sliders...the next closet amount of horizontal break was DET Andrew Vasquez’s 18.2 inches...He threw his four-seamer 24.3 percent of the time (.175 AVG against), and his sinker had a 23.2 percent usage rate (.220 AVG)...Ranked in the 95th percentile and above in avg exit velocity (100th, 83.9mph), hard-hit % (100th, 25.5%), xERA (99th, 2.62), xBA (98th, .184) and barrel % (95th, 3.6%).
2022
In 48 appearances between Double-A San Antonio and Triple-A El Paso, posted a 3.72 ERA (23 ER, 55.2 IP) with a .173 opponent average and 1.11 WHIP...Held left-handed hitters to a .513 OPS...lefties slashed .136/.240/.273, while righties had a .727 OPS...Began the season with the Missions, posting a 2.45 ERA across 20 appearances and 25.2 innings of work before being promoted to Triple-A on June 28...In his 30.0 IP and 28 app. for the Chihuahuas, posted a 4.80 ERA and 43 strikeouts against 15 walks...opponents hit .200 against him at the Triple-A level, and lefties hit just .156...On Nov. 15, 2022, was selected to the Padres' 40-man roster, protecting him in the Rule 5 Draft that took place on December 7th at the Winter Meetings in San Diego.
2021
After losing all of 2020 due to the COVID-19 pandemic, he returned to action as a reliever in 2021, striking out 32 batters over 26.2 innings (2.36 ERA) at Double-A San Antonio...Made 22 appearances for the Missions (all in relief), posting a 0.98 WHIP and holding opponents to just .192 average (19-for-99)...Allowed multiple runs in just 2 of his 22 outings.
2020
Did not pitch competitively in 2020 due to the COVID-19 pandemic and did not appear on the club's 60-man player pool at their Alternate Training Site.
2019
Underwent Tommy John surgery in Sept. of 2019... prior to his surgery, began the season with Single-A Lake Elsinore, and he pitched in six games with a 6.21 ERA in 29.0 innings before landing on the 7-day Injured List on May 9... was sent to Rookie-League AZL Padres 1 and 2 for his rehab assignment on Aug.6 before reinstating him from the IL on Sept.16.
2018
Spent the entire 2018 season in Single-A Fort Wayne and started 21 of the 24 games in which he played...posted a 3.71 ERA on the season in 116.1 IP, and opponents hit .276.
2017
In his 1st professional season in 2017, began the year with the AZL Padres for two games before being assigned to Single-A Tri-City, where he owned a 3.48 ERA (22 ER, 41.1 IP) in 11 appearances (six starts).
