Pina has 17 plate appearances with the Royals over the past two seasons, hitting .188/.235/.313 with two doubles and a walk in a small major league sample. In parts of eight minor league seasons, Pina owns a .252/.326/.363 line.
Durango played in 39 games for the San Diego Padres from 2009 to 2011, hitting .292 with no extra-base hits in 74 plate appearances. He spent the 2012 season playing for Gwinnett, the Atlanta Braves' Triple-A affiliate, hitting .289/.352/.335.
Gac is a 10-year minor league veteran, making his first appearance above A-ball in 2012 with Braves' Double-A affiliate Mississippi. He hit .247/.339/.443 with seven homers and 27 doubles. In 2011, Gac homered 33 times for the Advanced-A affiliate of the Chicago White Sox.