Bassitt won't pitch during the Athletics' final series of the regular season, Matt Kawahara of the San Francisco Chronicle reports.
Bassitt tossed 3.1 innings as the starter in Tuesday's loss to the Mariners, and manager Bob Melvin confirmed Friday that the right-hander is done for the season. However, the 32-year-old isn't dealing with an injury and likely would have been available if the Athletics were still in contention for a postseason spot. Bassitt made a career-high 27 starts this season and posted a 3.15 ERA and 1.06 WHIP in 157.1 innings.