PITTSBURGH — The Pittsburgh Pirates are making a surprising move concerning one of their top prospects. The Pirates announced that they optioned outfielder Esmerlyn Valdez to Triple-A Indianapolis and recalled utility man Tyler Callihan ahead of their series finale vs. the Chicago Cubs at PNC Park on May 28.Valdez joined the Pirates on May 22, ahead of their series vs. the Toronto Blue Jays at Rogers Centre and spent the past six days with the team.He hit his first MLB home run in the 4-1 victory over the Blue Jays in the series finale on May 24, a two-run shot that gave the Pirates a three-run lead in the top of the seventh inning.Valdez then hit his second home run and first at PNC Park in the 12-1 win over the Cubs on May 26, another two-run home run that finished a five-run first inning. He started five of the past six games in right field and just those two hits in 16 at-bats, with two walks and nine strikeouts. The Pirates will look to Callihan, as another option to help them in the outfield and throughout the next few games. Make sure to visit Pirates OnSI for the latest news, updates, interviews and insight on the Pittsburgh Pirates!Add us as a preferred source on GoogleFollow