Rookie Rafael Dolis so far is 2-for-3 in save situations, and 1-for-1 since taking over for Carlos Marmol. He has not walked a batter in his last six outings.
"The last three outs will be the hardest to get, no matter how good of stuff you have," Cubs manager Dale Sveum said Sunday. "You're basically making guys hit the ball and see what happens. The walks will end up killing you in any situation. That's why Mariano Rivera and Trevor Hoffman, they sustained everything for so long because they never walked anybody."
For example, since last June 5, when Marmol blew a lead in St. Louis -- which prompted Carlos Zambrano to declare "we stinks" -- the right-hander has walked 47 and given up 43 hits over 57 2/3 innings. In that same time frame, Rivera has walked six and given up 34 hits over 47 innings.
Chicago's Ian Stewart is one of five National League players to drive in at least 10 runs this season despite hitting under .200. Stewart, scratched Sunday because of the flu, was batting .196.
In his first start for Triple-A Iowa since being sent down Wednesday, Randy Wells gave up three runs on seven hits and two walks over five innings in a 7-3 loss to New Orleans on Saturday night. The I-Cubs gave up three runs in the fifth and four more in the sixth. Anthony Rizzo extended his hitting streak to 12 games, going 1-for-3 with a double.