McKenzie (groin) was listed as a full practice participant Monday, Chris Brown of the Bills' official site reports.
McKenzie's full participation puts him on track to play in Thursday night's season opener against the Rams. Meanwhile, the Bills' practice report has clarified that the team's projected top slot option had been dealing with a groin issue. McKenzie is slated to see his share of Week 1 looks versus the Rams while working alongside top wideouts Stefon Diggs and Gabriel Davis.