Today at 538: A look at Derek Carr, and why he’s the NFL’s newest gunslinger.

This season, Carr has been great in the fourth quarter, completing 27 of 45 passes for 368 yards (no sacks), with five touchdowns and just one interception. Carr’s Total Quarterback Rating (QBR) of 87.7 in the fourth quarter is second only to Ben Roethlisberger’s, 96.2. Carr is a legitimate offensive player of the year candidate on a resurgent Raiders team, and his strong fourth-quarter performance is one of the reasons.

But despite the game-winning drives and the success this year, Carr has taken his lumps late in games, too. Last season, he had a QBR of just 24.0 in the fourth quarter, the second-worst grade among the 33 qualifying quarterbacks (ahead of only Nick Foles). And this isn’t just a QBR issue — Carr also ranked second to last in fourth-quarter passer rating, at 67.5, again ahead of only Foles.

You can read the full article here.