Nevin made his professional debut that year with the Grand Junction Rockies[7] and spent the whole season there, batting .265 with two home runs and 18 RBI in 53 games. He played one game in 2016 for the Boise Hawks before his season was ended due to a hamstring injury.[8] He began 2017 back with Boise, and after six games, was promoted to the Asheville Tourists[9] where he finished the year batting .299/.353/.454 with eight home runs, 52 RBI, and ten stolen bases. He spent 2018 with the Lancaster JetHawks[10] where he slashed .328/.386/.503 with 13 home runs and 62 RBI in 100 games.[11] After the season, he played for the Salt River Rafters of the Arizona Fall League[12] where he won the AFL batting title and finished second in MVP voting.[13] He spent 2019 with the Hartford Yard Goats, hitting .251/.345/.399 with 13 home runs and 61 RBI over 130 games.[14] On November 20, 2019, the Rockies added Nevin to their 40-man roster to protect him from the Rule 5 draft.[15]
On May 28, 2021, Nevin was promoted to the major leagues for the first time, and was announced as the starting first baseman in that day's game against the Chicago White Sox.[18] However, that day's game was postponed due to inclement weather. He made his MLB debut the next day, his 24th birthday. In the game, he notched his first MLB hit, a ground rule double off of White Sox starter Dallas Keuchel.[19]
On October 3, 2021, in the final game of the year, Nevin hit his first major league home run off of Toronto Blue Jays starter Hyun-jin Ryu.[20]
On December 31, 2022, Nevin was traded by the Orioles to the Detroit Tigers in exchange for cash considerations.[23][24] In 2023, he split time between Detroit and its Triple-A affiliate. At the major league level, he appeared in 41 games, batting .200/.306/.316 with 2 home runs and 10 RBI. He appeared in 87 games for the Triple-A Toledo Mud Hens, where he hit 15 home runs, drove in 58 runs while batting .326/.400/.543. On January 18, 2024, Nevin was designated for assignment following the waiver claim of Devin Sweet.[25]
Oakland Athletics
On January 22, 2024, Nevin was traded back to the Baltimore Orioles in exchange for cash considerations.[26] Despite a strong spring training in which he hit .333 across 23 games, Nevin did not make the Opening Day roster and was designated for assignment on March 28.[27] On March 31, Nevin was claimed off waivers by the Oakland Athletics.[28] From April 23 to May 1, Nevin had a nine–game hitting streak in which he had 14 hits, including 4 home runs and 7 RBI. Oakland went 6-3 over this span. In 40 total games for the Athletics, he batted .220/.307/.341 with four home runs and 10 RBI. On May 28, Nevin was designated for assignment by Oakland.[29] He cleared waivers and was sent outright to the Triple–A Las Vegas Aviators on May 31.[30] On June 18, the A's selected Nevin's contract, adding him back to their active roster.[31]
Personal life
Nevin is the son of Phil Nevin, a former MLB player and former Los Angeles Angels manager.[32][33] Phil Nevin and A's manager Mark Kotsay were teammates in San Diego when Tyler Nevin was a boy. Upon Nevin joining the A's, Kotsay recalled him in the team's clubhouse as a child.[34]