Watch Jimmy Fallon, Rev Run and The Roots Freestyle in the Subway

The other MCs cannot compete.

Jimmy Fallon and The Roots added the latest chapter to their Freestylin' series this week. This time around, Rev Run joined in as a special guest.

With the help of a select few New York residents, Black Thought and Rev Run freestyled about the City that Never Sleeps. Watch the full video above.

Fallon gave the Roots' band stylistic cues for the backing track. From that point, Black Thought and Rev Run took the lead.

LISTEN: Black Thought and Rhymefest Link Up With Raheem DeVaughn on "O.G. Philosophy"

Last week was a big one for The Roots. On Friday, Philadelphia City Councilman Mark Squilla passed a resolution to name an Avenue of the Roots in the band's hometown. The sign is located at the intersection of East Passyunk Avenue and South Street. The street's dedication was scheduled to take place the weekend of May 30, to coincide with Roots Picnic 2020.

However, the city decided to go ahead and install the street sign the following Friday. "We were supposed to wait for the vote," Questlove said. "Then like in May come Picnic Time we'd have an unveiling w confetti & kool aid lol...really awesome to see the place we honed our skills and craft embrace us like this."

READ: Rev Run Reflects on Unreleased Run-DMC, Kobe Bryant Collaboration

Previous guests on Freestylin' with The Roots include Dave Chappelle and Justin Bieber. Besides the MTA, previous topics include hot dog toppings, Fleet Week, and summer festivals. View the whole series on the Tonight Show's YouTube channel.