Tommy Joachim Troy V (born January 17, 2002) is an American professional baseball shortstop in the Arizona Diamondbacks organization.

Troy attended Los Gatos High School in Los Gatos, California, where he played on their baseball team.^[1] He was ranked as a top 200 2020 Major League Baseball draft prospect by Baseball America, but went unselected in the shortened draft and enrolled at Stanford University to play college baseball.^[2] He played in the Northwoods League with the Traverse City Pit Spitters that summer.^[3]

As a freshman at Stanford in 2021, Troy appeared in 49 games (making 39 starts) and batted .247 with ten home runs, 28 RBIs, and six doubles.^[4] Following the season's end, he played in the Cape Cod Baseball League with the Wareham Gatemen, with whom he earned All-Star honors.^[5] As a sophomore at Stanford in 2022, he played in 55 games and hit .339 with seven home runs, 23 RBIs, and 15 doubles. He returned to play in the Cape Cod Baseball League with the Cotuit Kettleers and was named an All-Star.^[6][7] After the season's end, he was awarded the Robert A. McNeese Outstanding Pro Prospect Award after batting .310 with five home runs and twenty RBIs over thirty games.^[8][9] Troy entered the 2023 season as a top prospect for upcoming draft.^[10][11] Over 58 games for Stanford in 2023, he hit .394 with 17 home runs, 58 RBIs, and 17 stolen bases.^[12]

Troy was selected by the Arizona Diamondbacks in the 1st round, with the 12th overall selection, of the 2023 Major League Baseball draft. On July 18, 2023, Troy signed with the Diamondbacks on a below slot deal worth $4.4 million.^[13]

Troy made his professional debut with the Arizona Complex League Diamondbacks and was promoted to the Hillsboro Hops after four games.^[14] Over 27 games played between both teams, Troy hit .271 with four home runs and 21 RBIs.^[15] He was assigned back to Hillsboro to open the 2024 season.^[16]