The Bills are dealing with several injuries and right now are down their top two tight ends plus a handful of receivers.

Here are three observations from the fourth day of Bills training camp: Oliver was on fire on Day 4. Per multiple reports including Syracuse.com, Oliver had a huge day. Oliver had multiple tackles for loss and a potential sack on quarterback Josh Allen (quarterbacks are not tackled).

That's how he described the Buffalo Bills' injury situation to reporters on Monday. They're without five wide receivers and two tight ends. Buffalo's top two TEs are missing. Dalton Kincaid tweaked his knee on a catch on Sunday and wasn't participating Monday.