Tapia's contract was selected by the Red Sox on Friday.
Tapia was part of the Red Sox's 60-man roster during camp, and he'll now be in line to make his major-league debut after Josh Taylor (shoulder) was placed on the 10-day injured list. Tapia played at the Triple-A level over the past two seasons, recording a 4.33 ERA, 97:58 K:BB and 1.46 WHIP over 129 innings. His strikeout numbers don't jump off the page, and he's unlikely to play a very prominent role in Boston's bullpen.