Dbacks send Tony Pena to White Sox for minor leaguer

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PHOENIX (AP) -- The Arizona Diamondbacks have traded right-handed reliever Tony Pena to the Chicago White Sox for minor league infielder Brandon Allen.

Pena was 5-3 with a 4.24 ERA in 37 games for the Diamondbacks this season. He was 16-13 with a 4.08 ERA in 209 career games with Arizona.

He began the season as the team's top setup man but had struggled in recent weeks, especially against left-handed hitters.

Pena has the franchise record in holds at 63.

Allen split time this season with Double-A Birmingham and Triple-A Charlotte, hitting a combined .281 with 16 doubles, three triples, eight homers and 43 RBIs.

Allen was a fifth-round pick by the White Sox in the 2004 draft.