The Athletics optioned Tur to Triple-A Las Vegas on Thursday.
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.