A healthy scratch, McCoy played just one snap this postseason (a Patrick Mahomes scramble in the third quarter of K.C.'s win over the Houston Texans) and was inactive for the AFC title game. McCoy has not played a sizable number of snaps since Week 15 (14).
Pettis, San Francisco's 2018 second-round pick, has not played since Week 12. The wideout was dealing with an illness leading up to Sunday afternoon.