Montes De Oca was enjoying an excellent year in Triple-A prior to his call-up, pitching to a stellar 2.37 ERA despite pitching in an extremely hitter-friendly Pacific Coast League environment. He had struck out 17 batters against only four walks in his 19 innings of relief work with the Aces, and frequently spanned more than one inning.

Preview the May 23 matchup between the Arizona Diamondbacks and St. Louis Cardinals with odds over/under, game spread, betting lines and more.

Arizona is home to one of baseball's most unique venues. From it's retractable roof to the pool located beyond the wall in left-center field, Chase Field offers fans a fresh baseball experience. Arizona Diamondbacks Established: 1998 National League West Ballpark: Chase Field (opened 1998)

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The team has not announced Martinez's return, but did clear a roster spot for him by optioning reliever Christian Montes De Oca back to the minor leagues on Thursday. Montes De Oca was called up on May 16 after starting pitcher Eduardo Rodriguez was placed on the IL with left shoulder inflammation.