Is this some sort of hazing by the Cubs to get the young pitchers acclimated to going on the DL at the ML level? Marshall, Marmol, and now O'Malley have all been put on the DL this year. How long will it be before Hill, Mateo, and Ryu make appearances as well? I think the Cubs can get all three on the 15 day DL by the end of the year.