Taylor was limited on Thursday as well after missing practice on Wednesday.
If Tyrod can't go, rookie Nathan Peterman will get his second career start. Peterman had a miserable first start, throwing five picks in one half against the Los Angeles Chargers, but in relief of Taylor last week against New England, did lead a competent 13-play drive down to the Pats' 1-yard line in the fourth quarter.
Having to game plan for both Taylor and Peterman puts Indy's already shorthanded defense in a bind. But with a playoff berth still within reach, Buffalo would be far better off with Taylor under center.