(WMC-TV) - The St. Louis Cardinals traded Memphis Redbirds starting third baseman Zach Cox to Miami for right-handed reliever Edward Mujica before Tuesday's trade deadline.
Cox entered the season as the organization's number four prospect.
He is the Cardinals 2010 first round pick out of the University of Arkansas, and he played his first full season in Memphis this year.
Cox struggled out of the gate, but has brought his average back up to .254 with 9 homers and 30 RBI for the Redbirds.
In exchange the Cardinals get the 28-year-old Mujica, who has a 4.38 ERA in 41 games for the Marlins this season.
He is under the Cardinals' control for another season before he could be a free agent.
In his past 108 games with the Marlins, Mujica had a 3.44 ERA for 100 innings and 89 strikeouts against 23 walks. Mujica has held right-handed batters to a .211 average this season and lefthanders to a .270 mark while giving up six homers in 39 innings.
He has previously pitched for Cleveland and San Diego.