After signing with Oakland, Allen made his professional debut with the Rookie-levelArizona League Athletics, hitting .254 with one home run and 14 RBI over 35 games. Allen spent the 2018 season with the Beloit Snappers of the Single–AMidwest League with whom he batted .239 with 34 RBI and 24 stolen bases over 121 games.[11] In 2019, he began the year with the Stockton Ports of the High–ACalifornia League with whom he was named an All-Star.[12][13] He was placed on the injured list in late June after suffering a leg injury, and missed the remainder of the season.[14] Over 72 games with Stockton, Allen slashed .292/.363/.434 with three home runs, 25 RBI, and 13 stolen bases.[15] He was selected to play in the Arizona Fall League for the Mesa Solar Sox following the season.[16] Allen did not play a minor league game in 2020 due to the cancellation of the minor league season because of the COVID-19 pandemic.[17]
To begin the 2021 season, Allen was assigned to the Midland RockHounds of the Double-A Central.[18] He was placed on the temporarily inactive list twice during the season while participating in Olympic competition.[19] After returning from the Olympics in mid-August, Allen was promoted to the Las Vegas Aviators of the Triple-A West.[20] Over 89 games played between the two clubs, Allen slashed .288/.346/.403 with six home runs, 41 RBI, and 12 stolen bases.[21] On November 19, 2021, Oakland added Allen to their 40-man roster to protect him from the Rule 5 draft.[22] He returned to Las Vegas to begin the 2022 season.[23]
On April 18, 2022, Allen was added to Oakland's roster as a COVID-related substitute.[24] He made his major league debut the next day as the starting second baseman.[25] On April 22, he collected his first career hit, a single off of Baltimore Orioles reliever Dillon Tate.[26] On June 21, Allen hit his first major league home run, a two-run shot off of Seattle Mariners starter Marco Gonzales.[27] In 100 games during his season, he slashed .207/.256/.291 with four home runs, 19 RBI, and three stolen bases.[28]
Allen made 106 appearances for Oakland in 2023, batting .221/.263/.287 with four home runs, 20 RBI, and five stolen bases.[29] He played in 41 contests for Oakland in 2024, hitting .175/.216/.247 with one home run and four RBI.[30]
Atlanta Braves
On November 11, 2024, Allen was traded to the Atlanta Braves in exchange for minor league pitcher Jared Johnson.[31]
International career
Allen competed for a spot on the United States national baseball team in advance of the 2020 Summer Olympics and was subsequently named to the roster of the national team for the Americas Qualifying Event.[32][33] After the national team qualified, he was named to the Olympics roster on July 2.[34] Following the Olympic competition, during which the United States won a silver medal,[35] Allen was named Best Defensive Player.[36] For the tournament, he batted .286 with three extra-base hits.[37]
Personal
Allen is married to Savannah Boone, daughter of former professional baseball player Bret Boone.[38]
^Posted by California Baseball Academy USA on October 14, 2013 at 7:00pm; Feed, View the News. "2017 Grad Nick Allen Commits to USC". www.cbabaseball.org.{{cite web}}: CS1 maint: numeric names: authors list (link)