Pedro Strop's groin strain is apparently fairly serious:
#Cubs Strop to DL. Right groin strain. 3-4 Weeks. Rosscup back up— Bruce Miles (@BruceMiles2112) May 7, 2014
Zac Rosscup has been up and down twice now, appearing in just two games, the second game of the doubleheader against the Yankees, and in a loss to the Reds April 29. (It should be noted that even though Rosscup has spent most of the last two weeks at Triple-A Iowa, that's just one fewer game than James Russell has appeared in during that time span.) Pitcher for pitcher. 13 pitchers still on the staff, leaving the bench short -- again. How long will this go on? Granted, during the two games with the White Sox an extra bench player isn't necessarily a big deal.
However, I'd definitely like to see an additional bench player added for the series coming up at Atlanta and St. Louis.