Acquired from the New York Yankees as part of the Randy Johnson deal in the offseason, Halsey has quickly established himself as one of Arizona’s top starters. He has allowed three runs or fewer in all five of his starts this season.
The 24-year-old left-hander did not receive a decision in Arizona’s 3-2 win over San Francisco on Tuesday despite allowing just two runs and five hits in seven innings. Halsey surrendered a pair of homers to bring his season total to six.
“He mixed it up effectively enough to where he pitches a nice game,” Arizona manager Bob Melvin said.
Halsey will be facing the Pirates for the first time.
Pittsburgh improved to 4-2 on its 10-game road trip with a 3-2 victory on Saturday. Josh Fogg pitched into the eighth inning and combined on a two-hitter with Mike Gonzalez and Jose Mesa, who notched his 21st straight save.
The Pirates are set to make a move Sunday with catcher Benito Santiago, who was eligible to come off the disabled list on April 30. Santiago, who is 6-for-23 this season, has been out with a viral infection.
“We’ll look at all our different options,” Pittsburgh general manager Dave Littlefield said. “The major issue has been our concern for his being able to play at the major league level immediately.”
Pittsburgh expects to place first baseman Craig Wilson on the disabled list on Sunday due to an injured left middle finger. Wilson, who sat out Saturday’s game, is hitting .296 with one home run and seven RBIs in 26 games.
“Collectively as a team we need to go out and pick up the slack,” Pirates manager Lloyd McClendon said. “The players need to play better, the pitchers need to pitch better, the coaches need to coach better and I need to manage better.”
Pirates starter Kip Wells will be trying to win his third straight decision. Wells is 2-0 with a 2.50 ERA in three starts after going 0-3 with a 7.23 ERA over his first three outings.
Wells did not receive a decision in the Pirates’ 7-4 win at Houston on Tuesday. He surrendered four runs and nine hits over six innings while striking out five.
The 28-year-old right-hander is 1-2 with a 3.65 ERA in four career starts against the Diamondbacks.