Washington Redskins legend Joe Theismann knows a thing or two about devastating leg injuries, and he admitted he couldn't sleep after watching current Redskins quarterback Alex Smith suffer a gruesome leg injury of his own this past weekend, according to TMZ Sports.

Joe Theismann was at FedEx Field when Smith broke his fibula and tibia in his right leg due to a J.J. Watt sack in the third quarter. Smith's season is over, and Theismann couldn't help but think of the similarities to his own injury:

“It was so surreal yesterday in the stadium,” Theismann told the guys on the TMZ Sports TV show … “to have what happened to Alex on the day it happened to me 33 years ago.”

Joe says the similarities between the two are eerie.

“It was I think 166th game for Alex. Mine was 167. Basically, the same place on the field. Heck, I have a nephew named Alex Smith who's 33-years-old … the whole thing is crazy.”

Theismann says for the first time in his life, he couldn't really sleep after watching the injury in person — saying, ” I didn't really think this thing had bothered me as much as it did, and I think it probably got to me a little bit more.”

Theismann's career ended in 1985 when he suffered a similar compound fracture on a huge hit from Lawrence Taylor. That injury left Theismann's right leg slightly shorter than his left due to insufficient bone growth.

Hopefully, this isn't the end for the 34-year-old Smith's career. The Redskins brought in the veteran to replace Kirk Cousins, and Smith had done well enough to lead his team to a 6-3 record before last Sunday's brutal loss.