Mujica is in line to be Boston's closer for games when Koji Uehara is not available, the Providence Journal reports.Manager John Farrell laid out his plans for the bullpen Saturday, noting that he'll monitor Uehara's usage closely. Mujica served in that role last season when Uehara was removed from the closer's role in early September. Mujica's career in Boston started dismally, but he was quite effective in the second half of the season, posting a 1.78 ERA with six saves in 29 games after the All-Star break.