Sanchez is out of the lineup for Sunday's game against the Giants.
Sanchez had started in each of the Marlins' previous three matchups with right-handed starters, but he'll cede catching duties to Nick Fortes in the series finale while the Giants send right-hander Logan Webb to the hill. Sanchez and Fortes will likely continue to operate in a timeshare down the stretch, and the Marlins' catching picture could become even murkier with Miami using one of its two September call-ups on a third backstop in Jhonny Pereda.