Of course, the Chiefs and Bills aren’t the only teams that experienced some added reasons to be buyers or sellers by Tuesday’s deadline.

Mahomes vs Allen headlines these five key Week 9 talking points. Get the latest NFL news and opinion at DAZN News.

Josh Allen and the Buffalo Bills prepare to host Patrick Mahomes and the Kansas City Chiefs in a rematch of last season's AFC Championship Game.

This matchup features two storied franchises with ties to the early days of the American Football League (AFL). Buffalo was one of the inaugural members of the AFL in 1960, as were the Dallas Texans, who relocated to Kansas City and became the Chiefs after winning the 1962 AFL title.

Former Buffalo Bills linebacker Kiko Alonso could soon lose his NFL record as the most-traded player of all time.

The Buffalo Bills are reportedly among the teams that have checked in on the availability of New Orleans Saints wide receiver Chris Olave.

With Ed Oliver injured, the Buffalo Bills are expected to be in the market for defensive line help at the NFL trade deadline.

The New England Patriots will be looking for their sixth straight win in Sunday's Week 9 game against the visiting Atlanta Falcons. This could be a potential trap game for the Patriots against a 3-4 Falcons team coming off back-to-back losses.