Denny Hamlin survived his first blown tire on Sunday, but not his second at Kentucky Speedway.
Hamlin, who soldiered back and was running in the top 5 after a tire blew on Lap 38, hit the wall in Turn 4 on Lap 147.
"Oh man, oh (expletive)," Hamlin radioed after the incident.
After Hamlin fractured his vertebra on March 24 at Auto Club Speedway, the driver took the necessary precautions and voluntarily went to the infield care center after driving the No. 11 Toyota back to the garage.
"Just kind of wracked around a little bit, similar to the Kansas test last year where you got your bell rung, banged my knee pretty good against the steering wheel," Hamlin said. "I feel a lot better than I did just 10 minutes ago."
Fortunately, Hamlin doesn't believe he did any further damage to his back.
"My back feels good -- really good I say," Hamlin said. "It feels the same as it did this morning. Really, that was the least of the concerns after this hit."
Hamlin entered the Quaker State 40...