Joe Flacco's postseason success matched up well with NFL legends.

Five things to know about Joe Flacco, who agreed to a new contract with the Baltimore Ravens on Friday night.

1-- Though Flacco will be paid among the NFL’s elite quarterbacks, he’s never had a regular season in which he excelled at the standard set by the league’s elite quarterbacks.

Joe Flacco
Total QBR By Regular Season

Flacco has not ranked higher than 13th in Total QBR in any of the five seasons of his NFL career.

Twice, he's ranked 25th or worse.

2-- Flacco has been the starting quarterback for 63 wins in the regular season and postseason in the first five seasons of his career. That’s the most by a quarterback in his first five seasons within the Super Bowl era.

His nine postseason wins are tied with Tom Brady for the most by any quarterback in his first five seasons

3-- Flacco threw for 22 touchdowns with 10 interceptions in the 2012 regular season, a year he finished with a 46.8 Total QBR (25th in the NFL). But in the postseason, he tied Joe Montana for the most touchdown throws without an interception. His 11 touchdowns and no interceptions matched what Montana did in 1989.

4-- Flacco has a 61.4 career Total QBR in regular-season home games and a 45.9 Total QBR in regular season road games.

The 15.5 differential ranks second-highest among quarterbacks with at least 500 pass attempts at home and on the road since 2008, surpassed only by soon-to-be Kansas City Chiefs quarterback Alex Smith (19.2).

5-- What did Flacco do best during the postseason run that helped him earn this contract? The key was his success with deep throws.

Flacco completed 13-of-26 throws of 21 yards or more in the postseason, with four touchdown passes.

Flacco’s completion rate on those throws in the regular season was 37 percent, only a hair above league average.