The 23-year-old Venezuelan made his Major League debut in Detroit on July 1 and pitched in nine games before being optioned back to the system late in the month. He was bumped from Triple-A Toledo to Double-A Erie last weekend to make room on what had become a crowded pitching staff. Chance Ruffin is still in the Mud Hens bullpen, as was Ryan Perry until his callup over the weekend. David Purcey was outrighted to Toledo last week.
It didn't necessarily reflect Oliveros' prospect standing in the Tigers system -- he had entered the season ranked on many lists -- but it showed some reluctance to advance him too far, too quickly. Still, it was a decent piece for the Twins, who assigned him to Triple-A Rochester.
Oliveros gave up five earned runs over eight innings in his time in Detroit. He posted a 1-3 record, 6.43 ERA and five saves in 22 appearances with the Mud Hens. His 10 games at Erie saw much better results with a 2-0 record, 0.53 ERA and 28 strikeouts over 17 innings.