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TSBURGH -- The Pirates' postseason chase will briefly continue with a Chase.
Infielder Chase d'Arnaud was recalled from Triple-A Indianapolis on Tuesday, taking the roster spot vacated by the release of left-hander Erik Bedard earlier in the day.
For practical purposes, however, d'Arnaud actually takes the place of Neil Walker, who on Tuesday continued receiving treatment for the lower-back tightness that had knocked him out of Monday's lineup.
That also means d'Arnaud's stay could be brief, though he figures to be one of the players added when the 25-man roster limit is suspended on Saturday.
d'Arnaud will be making his first big league appearance of the season after hitting .247 in 97 games in Triple-A, where he played primarily shortstop. His season was considerably interrupted by a concussion resulting from being hit by a pitch in April.
"When I returned from that concussion, it was tough. I didn't have my timing right away," d'Arnaud said prior to Tuesday night's game against the Cardinals. "The last month, I've played with more focus. I'm here, and I just want to take advantage of this opportunity."
The 25-year-old California native did log considerable time with the Pirates last season, appearing in 48 games and batting .217 in 143 at-bats.
d'Arnaud was also successful on 33 of 38 steal attempts with the Triple-A club, which figures to be a significant asset to a Pittsburgh team that has one of the Major Leagues' poorest track records on the bases. Pirates runners have been thrown out on 44 of their 100 steal attempts.
"Chase is here to give us the flexibility to do more things with our other infielders," said manager Clint Hurdle. "[Walker] felt a little better but needed to be seen by another doctor. He'll be in the clubhouse later, and we'll see where we're at."