Seabold (pectoral) was placed on the 7-day injured list Tuesday, Alex Speier of The Boston Globe reports.
Seabold has been managing a pectoral injury recently, and he was scratched from his scheduled start for Triple-A Worcester last Friday. The injury isn't considered serious, but he'll now be forced to miss at least one more outing while on the injured list. Seabold has produced a 2.45 ERA and 0.94 WHIP with 37 strikeouts over 36.2 innings spanning seven starts with Worcester this season.