Mlodzinski said Saturday that he is building volume this spring to become a starter, Noah Hiles of the Pittsburgh Post-Gazette reports.

Heaney agreed to a one-year deal with the Pirates on Thursday that includes $5 million with incentives, Alden Gonzalez of ESPN.com reports.

Frazier (thumb) took live batting practice against Pirates right-hander Mitch Keller during Wednesday's full-squad workout, Noah Hiles of the Pittsburgh Post-Gazette reports.

Pirates director of sports medicine Todd Tomczyk said Wednesday that Sullivan is battling right elbow soreness, Andrew Destin of the Pittsburgh Post-Gazette reports.

Rodriguez is dealing with right elbow discomfort, Andrew Destin of the Pittsburgh Post-Gazette reports.

Pirates director of sports medicine Todd Tomczyk said Wednesday that Moreta (elbow) is unlikely to pitch in any Grapefruit League games, Noah Hiles of the Pittsburgh Post-Gazette reports.