Mujica, 28, has a 4.38 ERA, 6.0 K/9, 2.1 BB/9, 1.38 HR/9, and 50.4% groundball rate in 39 innings for the Marlins this year. Mujica is owed $568K for the remainder of the season and will be arbitration eligible for the third and final time after the season. Mujica was part of the deal that sent Cameron Maybin to the Padres in November 2010.
Cox, 23, was the Cardinals' first-round pick in 2010. He's hitting .254/.294/.421 in 316 Triple-A plate appearances. Baseball America ranked Cox fourth among Cardinals prospects prior to the season, and was still willing to call him a "potential No. 3 hitter" at the time. It's a nice pickup for Mujica, even if Cox's star has fallen.
Photo courtesy of Steve Mitchell/US Presswire.