Pro Football Focus publishes grades for individual NFL players for their entire careers, for each season, for preseason, regular season, and playoffs separately, and for each individual game. Usually that’s sufficient.
For Sunday’s Jekyll-and-Hyde Giants-Cardinals game, though, they should really make an exception and publish first and second half grades. Since they don’t, we might expect to see many players grading around 60, PFF’s threshold for “average” play. For many Giants players, though, that would be the result of something like a 40 in the first half and 80 in the second half - and that includes the coaches, who aren’t graded by PFF but who finally opened up the offense after six quarters of conservative, ineffective play.