Sonny Gray (hip) is unlikely to make another start this season.
Athletics manager Bob Melvin said Saturday that Sonny Gray is dealing with a sore hip.
Sonny Gray pitched six innings of two-run ball to defeat the Giants on Friday.
Sonny Gray was rocked by the Astros in a Saturday no-decision, yielding five runs on eight hits over 5 1/3 innings.
Sonny Gray was slammed for seven runs in three innings but lucked into a no-decision as the White Sox needed 14 innings to beat the Athletics on Monday.
Sonny Gray bested the Astros in Tuesday's win, firing seven scoreless innings.
Sonny Gray was hammered for six earned runs over five innings Wednesday in a loss to the Angels.
Sonny Gray pitched eight innings and allowed three runs Saturday in a no-decision against the Rays.
Sonny Gray returned to the rotation and lost on Monday, giving up four runs (one earned) in 5 2/3 innings.
Sonny Gray (back) has officially been cleared to rejoin the Athletics' rotation on Monday in Baltimore.
Sonny Gray (back) didn't report any problems after throwing a 25-pitch bullpen session on Saturday.
Sonny Gray (back) played catch from up to 75 feet on Friday.
Sonny Gray has been scratched from his scheduled start Thursday due to back spasms.
Sonny Gray went the distance Friday, scattering five hits in Oakland's 3-1 win over Houston.