Harris was added to the Athletics' 40-man roster Tuesday.
Harris turns 26 in December and has made just eight starts at Triple-A, logging a 6.35 ERA, 1.69 WHIP and 39:17 K:BB in 28.1 innings. Given his control issues and age, it might make sense for Harris to work in low-leverage situations out of the big-league bullpen at some point in 2023.