The Twins designated Irvin for assignment Wednesday.
Irvin allowed five earned runs over just 3.2 innings during his brief time with the Twins, and he's now been DFA'd by two teams within the last 10 days. The left-hander carries a 5.11 ERA and 1.45 WHIP through 111 innings on the year and would not be eligible for the postseason if a contender claims him.