Irish was placed on the 7-day injured list at High-A Frederick on Friday with a torn left meniscus, Steve Melewski of BaltimoreBaseball.com reports.
Irish suffered the unfortunate injury on a slide into second base earlier this week. It concludes what was a terrific first full pro season for Irish, who slashed .286/.388/.528 with 16 home runs, 20 stolen bases and a 43:75 BB:K over 76 games with Frederick. Irish will likely move up to Double-A to start next season.