Pretty likely locking up a run at his record-tying seventh championship after the second race in the season.
Hamlin took blame for the incident, saying he was trying to avoid hitting teammate Carl Edwards.
“(Edwards) checked up and if I didn’t move to the right I was going to spin him out, I was going to run right into the back of him,” he said.
“I moved to the right of him and I was right on the door of the 4 (Kevin Harvick) and it just sucked the back around and that was it. I apologize to all those cars involved.”
Track officials had increased the amount of padding in Atlanta after Kyle Busch smashed headfirst into an unprotected wall during an Xfinity Series race in Daytona, leaving him with a broken right leg and left foot.