(CBS) When the dust settled in the NFL landscape on Sunday, Peyton Manning appeared to have eclipsed Drew Brees’ 2011 passing record.

Manning completed 25-of-28 passes for 266 yards, good for 5,477 yards on the season – one more than Brees’ record. But the NFL is now reviewing a 7-yard completion to Eric Decker with just over a minute remaining in the first quarter.

According to a report from ESPN, one camera angle implied the pass to Decker was a lateral, which would have made it a running play. Another angle, however, showed Decker catching the ball at the Broncos’ 48-yard line, with Manning slightly deeper than that.

If the play stands, Manning keeps his record. If the NFL determines the play was in fact a lateral, Manning would finish with 5,470 yards, which would be the second-highest season total in league history.

Manning already broke Tom Brady’s single-season touchdown record with 55 touchdowns this season.

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