Pivetta is 9th player to test positive in Red Sox COVID-19 outbreak
The 28-year-old is vaccinated and his positive test is considered a breakthrough case.
Red Sox manager Alex Cora said Pivetta is asymptomatic.
Pivetta was scratched from his start on Sunday after he was placed on the COVID-19 injured list.
Hernandez will be reinstated prior to Tuesday's game and will bat leadoff while playing center field against the Tampa Bay Rays, Smith notes.
Meanwhile, Bogaerts is feeling great and could return to the lineup Friday, Cora said, according to Alex Speier of the Boston Globe.