CHICAGO -- Cubs relievers boasted the second-best ERA and had the fewest losses in the National League entering Sunday, but president of baseball operations Theo Epstein says they're on the lookout to add an arm before the July 31 non-waiver Trade Deadline.
"You're always looking to upgrade this time of year when you have a competitive team," Epstein said Sunday. "No matter how well your 'pen has pitched, there's always a desire to look around and see if you can tweak it and improve it. You're always cognizant of the fact that you can address it after July 31.