Clarke (lower body) is set to throw live batting practice Sunday, Anne Rogers of MLB.com reports.
Clarke's been slowed early in spring training by lower-body soreness. He's been dealing with the issue for about a week. The right-hander will likely need just one or two live BP sessions before being cleared for game action, so he'll still have enough time make an impression on manager Matt Quatraro over the next few weeks while competing for a bullpen spot.