MILWAUKEE -- The Pirates' roster for a possible postseason appearance came into surprising focus on Friday, when the club recalled outfielder Alex Presley and right-handed starter Kyle McPherson from Triple-A Indianapolis.
To make room on the 25-man roster, the Bucs optioned infielder Chase d'Arnaud to Class A Advanced Bradenton and outrighted first baseman Jeff Clement to the same club.
Rosters for postseason eligibility will be frozen at 11:59 p.m. ET on Friday. The Clement move frees up a spot on the 40-man roster, leaving open the possibility for general manager Neal Huntington to make another move prior to the deadline.
Presley returns for his third stint with the Pirates this season. He has hit .234 in 77 games, the most recent on Aug. 7.
McPherson made a brief, impressive Major League debut on Aug. 22 in San Diego, blanking the Padres for two innings on one hit and recording two strikeouts.
McPherson is likely to step into the rotation and start against the Astros on Tuesday, taking the place of left-hander Erik Bedard, who was released this week.
d'Arnaud did not appear in a game following his recall from Indianapolis on Tuesday, the day after second baseman Neil Walker was shelved by lower back tightness.
After being called up from Indianapolis a week ago, Clement went 0-for-6, starting one game as well as serving as a pinch-hitter.
Tom Singer is a reporter for MLB.com and writes an MLBlog Change for a Nickel. He can also be found on Twitter @Tom_Singer. This story was not subject to the approval of Major League Baseball or its clubs.