CHICAGO- The Cubs added to their starting rotation with the signing of left-hander Paul Maholm to a one-year contract, the Chicago Tribune reported Tuesday.

The 29-year-old's deal is worth $4.25 million in 2012 and includes an option for 2013.

Maholm spent his entire seven-year career in Pittsburgh going 53-73 over that span with a 4.36 ERA.

"I hope to get to continue some things when I visit during the year and start some great things as I start my Cubs career," Maholm said on Twitter Monday in a message to Pirate fans.

But despite a shabby win-loss record (6-14) last season in 26 starts, Maholm maintained a solid 3.66 ERA, which ranked 25th among National League starters.

The Cubs' rotation currently includes righties Matt Garza, who has been discussed in trade talks, and Ryan Dempster.

Others in the mix include Chris Volstad -- who was acquired last week from Florida for Carlos Zambrano -- Randy Wells and Travis Wood.

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