Pirates recall RHP Irwin to make start
The Pirates optioned infielder/outfielder Josh Harrison to Indianapolis to clear room on the roster for Irwin.
Irwin, 26, won his only start with Indianapolis this season, allowing one run in six innings for a 1.50 ERA. He has a 29-16 record in the minor leagues since being the Pirates' 21st-round draft pick in 2009 from the University of Mississippi.
Harrison hit .125 with one RBI in six games.