The Padres plan to call up Cosgrove from Triple-A El Paso prior to Wednesday's game against the Cubs, Bob Nightengale of USA Today reports.
Cosgrove has gotten off to a nice start at El Paso, having yet to allow a run over 7.1 innings out of the bullpen while striking out seven, although he has issued four walks in that timeframe. The 27-year-old left-hander will be making his MLB debut when he appears in a game with San Diego.