Neal was optioned to Triple-A Nashville on Thursday.
Neal spent about three weeks with the A's after being called up June 10, and has accumulated a 1-1 record with an 8.04 ERA and a 1.25 WHIP in 15.2 innings of work for the club this season. He will go back down to Nashville, where he has pitched superbly so far in 2016, amassing a 6-1 record with a 2.83 ERA during 47.2 innings. In addition to Neal going back to Nashville, pitchers Daniel Coulombe and Andrew Triggs were promoted to the major league club, as Sean Doolittle was placed on the disabled list Thursday.