Brad Keselowski had his confidence shaken at Daytona International Speedway more than once.

He was a good plate racer, but never could find his way to victory lane at NASCAR’s most famous track.

That changed Saturday night with a dominating performance that gave Team Penske its 100th career Sprint Cup Series victory — a win that Roger Penske celebrated in victory lane by participating in the traditional champagne spray.

More important, it gave Keselowski his long-awaited first win at Daytona.

Keselowski led a race-high 115 laps then held off Kyle Busch on a two-lap shootout that sent the race into overtime for one additional lap. It gave him his fifth career Cup win in a restrictor-plate race, but all the others had come at Talladega. He won on the Alabama track most recently in May.