After fielding arguably the NFL’s worst offensive line in 2016, the Los Angeles Rams set out to remake the unit last offseason. They did exactly that by bringing in Andrew Whitworth and John Sullivan, two savvy veterans over the age of 30.

In Whitworth’s case, he was coming off of back-to-back Pro Bowl seasons with the Bengals before joining the Rams. Immediately, the signing paid dividends for Jared Goff and the entire offense as Whitworth earned his second All-Pro selection, proving to be one of the best left tackles in the game today.

He did all that at the ripe age of 35 years young, playing at an extremely high level. Now 36, Whitworth joins a thinning group of players over the age of 35. Pro Football Focus ranked the 10 best in the NFL, and not surprisingly, Whitworth was among them.

There’s no doubting the 12-year veteran Whitworth took a bit of a step back in his debut season with the Rams in 2017, earning his first sub-85.0 overall grade since 2008. However, the 36-year-old Whitworth still put together a strong enough campaign last season to warrant a spot on this list. Allowing just 24 total pressures across his 506 pass-blocking snaps, Whitworth tied for 13th in pass-blocking efficiency (96.1) among offensive tackles with at least 337 pass-blocking snaps in 2017. He also ranked 11th in run-block success percentage (10.4) among offensive tackles with at least 300 run-block snaps this past season.

It’s fair to say Whitworth didn’t have his best season as a pro, but he still earned All-Pro honors and only missed one game (Week 17 due to rest). As one of the most durable linemen in the NFL, he also brings reliability to go along with his sheer talent.

Above Whitworth on PFF’s list was Tom Brady (shocker), Drew Brees, Jason Peters and Ben Roethlisberger. Quarterbacks often play longer than any position outside of kicker and punters, so it’s no surprise four of the top six players on the list play that very position.

If Whitworth can continue to play at a high level in 2018, perhaps he’ll consider playing another season at the age of 37 in 2019.