Ryne Nelson is slated to return to the mound at PK Park on Thursday.
The former Oregon pitcher is the scheduled starter for Hillsboro when it faces Eugene in the second game of a three-game series. Nelson will likely pitch just one or two innings as he begins his professional career on a limited pitch count.
Nelson made his pro debut Saturday by tossing a scoreless inning at Boise. He allowed one hit and had one strikeout.
Nelson was drafted in the second round by Arizona with the 56th overall selection. He received a $1.1 million signing bonus to skip his senior season with the Ducks.
The 6-foot-3 right-hander was an all-Pac-12 pick as a junior when he went 3-4 with a 4.29 ERA while striking out 104 in 65 innings. In three years at Oregon, Nelson went 6-6 with a 4.25 ERA in 48 appearances with 158 strikeouts.