Gillaspie was recalled from Triple-A Norfolk on Monday.
Gillaspie's last major league stint came in mid-August when he threw 1.2 scoreless innings over two appearances. This season, he's been much more effective in Baltimore -- where he has a 0.00 ERA over 6.1 innings -- compared to on the road (11.25 ERA). Keegan Akin was optioned down to Norfolk in order to make room for Gillaspie.