Luciano is out of the lineup for Wednesday's game against the Nationals, Shayna Rubin of the San Francisco Chronicle reports.
After receiving a call-up from Triple-A Sacramento on July 30, Luciano made starts at designated hitter in five of the ensuing six games, but he went just 3-for-17 with eight strikeouts. His run as an everyday player may already be over, as Luciano is sitting for the third time in four games, including for the second time against a right-handed starting pitcher (Jake Irvin).