The Pittsburgh Pirates have added Michael Morse to the active roster and have optioned Jaff Decker to Indianapolis, per a team press release. Morse was expected to join the team today, and it made sense to send out Decker as a corresponding move. The outfielder is the only guy on the bench who had options remaining, and there was little need for his help as an additional outfielder right now.
Decker will almost certainly return in September when rosters expand, but for now this move allows the Pirates to add Morse while keeping Travis Ishikawa, who has been one of the better bench players the Pirates have seen this year.