San Francisco 49ers fans are well aware of just how good tackle Joe Staley has been throughout his 12-year NFL career. For those who don't follow the 49ers religiously, Pro Football Focus released an article on Thursday explaining what makes Staley one of the best left tackles of his generation.

Here are just a few of the numbers Cameron Pezet of PFF throws out in the feature to prove his point:

"Staley's career pass-blocking grade of 86.6 ranks 12th in the PFF era (2006-present) among left tackles with at least 100 career snaps. However, it's been run-blocking where Staley has truly excelled, ranking second in the PFF era with a career run-block grade of 92.4. He also owns the third-highest single-season run-block grade in PFF history by a left tackle, accumulating a mark of 92.4 over 19 games (including postseason) in 2012, and on a game-by-game basis, Staley's name appears twice when looking at the top-15 graded games by a left tackle."

Pezet ends the piece by saying Staley's consistency over his career has helped him build a resume for a potential Hall of Fame bid down the road.

Second-year teammate and close friend, tackle Mike McGlinchey, agrees that Staley should be inducted in Canton one day. He tweeted out the following after reading the PFF feature. McGlinchey didn't come right out and say Staley is a future Hall of Famer but did include the #HOF hashtag.

Staley, 34, is in the final year of his contract with the 49ers. How many more years does he have left in him after that?

"I'll know when I know," Staley said in December. "I'll know when my play is slipping. I feel I played solid this year. I feel like I can still play at a high level in the NFL. My body feels good."