Atlanta acquired Allen from the Athletics on Monday in exchange for Jared Johnson.
Allen, 26, has managed just a .209/.254/.283 batting line over parts of three seasons at the major-league level. He does have a reputation as a solid glove at shortstop, although he came in at negative-2 Outs Above Average during his 41 games with the Athletics in 2024. Allen offers an alternative at shortstop to Orlando Arcia, who is coming off a disappointing season, but ultimately Allen should be more of a depth option.