PHILADELPHIA -- The Phillies placed three players on the injured list due to COVID-19 protocols, and two more coaches weren't with the team for a 2-0 loss Monday to the San Francisco Giants.

A source told ESPN's Jesse Rogers that one player tested positive, and the others were placed on the list due to contact tracing.

"Every day we walk into the clubhouse, we worry about that, because there's players that are asymptomatic, or coaches that are asymptomatic, or people that are asymptomatic," Philadelphia manager Joe Girardi said before the game, when asked if the team is still monitoring protocols daily. "And you just don't know. So, we have to be on our guard every day."

Left-handed reliever Jose Alvarado, lefty starter Matt Moore and infielder Ronald Torreyes went on the injured list. First-base coach Paco Figueroa and assistant Bobby Meacham also entered COVID-19 protocols, joining hitting coach Joe Dillon, third-base coach Dusty Wathan and bullpen coach Dave Lundquist.

The team did not say if any of the players or coaches had tested positive for the coronavirus.

Infielder Nick Maton and left-handed pitchers Damon Jones and Cristopher Sanchez were recalled from Philadelphia's alternate site.

Infield coach Juan Castro served as first-base coach Monday night against San Francisco and Triple-A manager Gary Jones came up coach third base.

The Associated Press contributed to this report.