Red Sox promote 2 pitchers from Triple-A Pawtucket
The 29-year old Hinojosa is on a major league roster for the first time. Layne, 30, made the opening day roster and appeared in four games, allowing three runs in 4 2-3 innings before being demoted April 12.
The 30-year old Varvaro made nine relief appearances, going 0-1 with a 4.09 ERA.
Bradley, 25, was recalled Tuesday, but didn't get in an 11-8 loss to the Blue Jays.