The knee had been bothering Joe for the past several days. Buddy and the Padres were hopeful that a few days rest might calm it down, but it was not getting better with rest and treatment and the team could not continue to be short an arm in the bullpen.
Brad Boxberger was recalled from Triple-A Tucson. The right hander has posted a 2-2 record, 5 saves, and 3.03 ERA in 34 appearances with Tucson, and is making his second stint with the big league club. In 5 previous outing with the Pads he posted a 1.42 ERA in 6.1 ip.
With the addition of Boxberger the Padres now have all 4 of the players, including Volquez, Alonso, and Grandal, that they received in return for the Mat Latos trade to the Reds.