The 26-year-old Tur was promoted for his major-league debut last week and was absolutely pounded across two appearances with the big club. He faced 24 batters and was able to record just eight outs while allowing 14 runs on 12 hits and four walks with three strikeouts. Manager Mark Kotsay openly wondered if Tur was tipping his pitches, according to Jason Burke of Roundtable.io. Tur will try to figure things out again with Las Vegas.

Tur will join the big club after turning in a 4.41 ERA and 1.31 WHIP across 51 innings at Las Vegas during the first half of the season. The A's have an opening in their rotation after pushing Aaron Civale off the 26-man and 40-man rosters, but Tur has pitched just one frame in six of his last seven minor-league appearances, so he'll most likely work out of the bullpen to begin his major-league career.