Randy Wells eyes late-May return

LOS ANGELES -- Injured Chicago Cubs pitchers Randy Wells and Andrew Cashner experienced no pain after throwing off a mound two of the past three days and will continue their rehabilitation at the team's minor league complex in Mesa, Ariz.

The pitchers threw bullpen sessions on Monday and Wednesday, the first time either has thrown off the mound since April 8, when both were put on the disabled list. Cashner is recovering from a right rotator-cuff strain while Wells is recouping from a right forearm strain.

"I threw my second bullpen [Wednesday] and feel pain-free," Wells said. "It's just a matter of getting cranked up and getting my arm built up."

Cashner and Wells will travel to Arizona after the Cubs complete their road trip in Los Angeles against the Dodgers on Wednesday.

The Cubs' plan is to have them continue throwing on the side during the next week and eventually throw to hitters in a simulated game followed by minor league rehab starts.

"The most frustrating thing is you're not sure when you're going to be ready," Wells said. "You have to trust in the trainers and the program you're on. You know that they have your best interest in mind."

Wells said he is eyeing a return during the Cubs' May 24-31 homestand.

"I don't know if that is going to pan out or not, but that's my goal right now," Wells said. "That's not the organization's plan. That's my personal goal."

With the injuries to Cashner and Wells, James Russell and Casey Coleman have been filling in as the fourth and fifth starters.

Bruce Levine covers the Cubs for ESPNChicago.com and ESPN 1000.