The Pirates have claimed infielder/outfielder Oscar Tejeda off waivers from the Red Sox and have assigned him to Double-A Altoona. Tejeda has been placed on the 40-man roster and LHP Doug Slaten has been designated for assignment. The 22-year old Tejeda entered the 2012 season ranked by Baseball America as the second-best second base prospect in the Boston organization and the No. 24 prospect overall in the Red Sox system. In 51 games with Double-A Portland this season, Tejeda hit .262 (53-for-202) with 15 doubles, five home runs and 31 RBI. Tejada spent the 2011 season with Portland and led the club in at bats (457) while also ranking second in games (123), hits (114) and stolen bases (13). Tejeda was originally signed by Boston as a non-drafted free agent on July 2, 2006.