Up there with Parcells vs. Gibbs and Levy vs. Shula, the Tom Coughlin and Andy Reid rivalry has been one of the NFL's most frequent matchups between two head coaches.

When the New York Giants and Kansas City Chiefs meet on Sunday, Coughlin and Reid will square off from opposite sidelines for 20th time in the regular season, more than any other matchup between active coaches. Dating back to Coughlin's days in Jacksonville, Reid, who took over in Kansas City this year after 14 seasons with the Philadelphia Eagles, leads the series, 10-9. He also won the two postseason games between their teams, in 2006 and 2008.

That leads us to our Morning Debate:

What has been the most memorable game in the Coughlin vs. Reid rivalry?

Let us know your thoughts in the comments section below.