Diamondbacks option left-hander Slaten to Triple-A, recall right-hander Buckner

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PHOENIX (AP) -- The Arizona Diamondbacks optioned left-hander Doug Slaten to Triple-A Tucson on Sunday, recalling right-hander Billy Buckner for the third time this season.

Buckner was optioned to Tucson when Slaten was activated from the disabled list on August 13th.

Slaten was 0-3 with a 4.30 ERA in 38 appearances this season.

Buckner is 1-0 with a 4.00 ERA in nine innings over six games.