Transcript for Mickelson's Epic Come-From-Behind Victory
Meantime, a thrilling moment that's already arrived. Phil mickelson going home with the trophy at the open. Sharing the win with family members who have battled themselves. Alex marquardt with more on that. Reporter: A stunning, come-from-behind victory. Oh that goes down! Yes! A double fist pump for lefty! Reporter: Starting the day five strokes behind the lead, american phil mickelson birdies 4 of the last 6 holes. Probably hit some of the best shots I ever hit. Reporter: Mickelson's caddie burst into tears. Before the 43-year-old embraced his family. Which has gone through so much. Four years ago, mickelson's wife amy was diagnosed with breast cancer. Just a few weeks later, his mother was as well. Despite the heartache, he won his third masters the next year and went straight to amy, who has since beaten her cancer. It's a win for the family. Reporter: This was mickelson's 20th time playing in the british open. He said today he thought he might never win it. Now his closing round is being considered one of the greatest in history.
This transcript has been automatically generated and may not be 100% accurate.