Ryan Rolison secures prominent bullpen role with Chicago Cubs

Chicago Cubs left-hander Ryan Rolison has emerged as a key bullpen contributor during his first season with the organization. Claimed off waivers from the White Sox in January, the 29-year-old has compiled a 2.89 ERA over 52 appearances heading into Tuesday. Manager Craig Counsell credits the left-hander's successful transition to improved health and a willingness to adopt mechanical adjustments proposed by the coaching staff. Rolison expanded his pitch mix by adding a sinker and a sweeper, which he utilizes to vary movement profiles against opposing hitters. With the regular season entering its final three weeks, the Cubs continue to push for the league’s top wild-card position. Rolison expects to remain a primary option in high-leverage situations as the club pursues a postseason berth.

• 12:25 AMYahoo Sports — Chicago Cubs reliever Ryan Rolison’s spring training buy-in has led the lefty to a big bullpen role