The Red Sox optioned Seigler to Triple-A Worcester on Sunday, per Jen McCaffrey of The Athletic.
As Seigler's playing time continues to go to Nick Sogard, Boston removed him from the active roster and sent him to Worcester. In 171 major-league plate appearances, Seigler is slashing .250/.331/.405 with three homers and 13 RBI this season. Boston activated Trevor Story (abdomen) and Roman Anthony (finger) from the injured list to replace Seigler and Mickey Gasper on the active roster.