Robert Griffin III's tenure with the Baltimore Ravens has been extended by two years, the team announced Thursday. 

NFL Network's Ian Rapoport first reported the news and noted Saturday that the 2-year contract was worth $4.5 million. 

The Ravens signed Griffin to a one-year deal worth $1 million in April 2018 with the potential for him to serve as a backup quarterback to Joe Flacco, who has since been traded to the Denver Broncos.

"He's a very talented quarterback who's had a lot of success in this league early on," Ravens coach John Harbaugh told reporters about Griffin in 2018. "So we're excited about it. We felt like we needed a No. 2 quarterback. You look at the veteran quarterbacks out there ... I mean, where we're at right now, I'm pretty excited about this player. I'm really feeling like we got a steal."

After Baltimore traded back into the first round to select Louisville quarterback Lamar Jackson at No. 32 overall, Griffin's odds of making the roster seemed to get longer.

However, he earned high marks during training camp for taking Jackson under his wing and acting as a mentor.

"I'm trying to help nurture him as much as I possibly can," Griffin told Sports Illustrated's Ben Baskin, "so that when he flies away, he is ready to fly away. Because when you watch it fly away, at that point it's up to that bird."

While also helping Jackson learn about the NFL game, Griffin had a solid preseason in Baltimore. The 28-year-old completed 65.9 percent of his attempts with two touchdowns, though he was also sacked seven times in four games.

After the Ravens traded Flacco, they had a vacancy behind Jackson to fill.

Jackson is entrenched as Baltimore's starter in 2019, so re-signing his mentor after the two seemed to work well together last season made sense for everyone involved.