Irvin was named the International League's Pitcher of the Year on Tuesday, Tom Housenick of The Morning Call reports.
Irvin doesn't have all that much prospect pedigree, but he's posted excellent numbers throughout the season for Triple-A Lehigh Valley, recording a 2.67 ERA over 155.1 innings. Scouting reports have him as a back-of-the-rotation, command-driven lefty, as he lacks velocity and has no plus secondary pitches. The 24-year-old achieved great results against Triple-A hitters despite those limitations, however, with a low 5.5 percent walk rate playing a large part in his success. He's not on the Phillies' 40-man roster, so a September callup appears unlikely, but he could be given a look at some point next season.