Phil Mickelson does post-round interview behind $13 million cash prize after beating Tiger Woods on fourth playoff hole

Phil Mickelson birdied the fourth playoff hole to beat Tiger Woods in their $13 million made-for-TV match overnight.

Mickelson made a 4-foot birdie putt on a specially set up 93-yard, par 3.

The match at Shadow Creek Golf Club finished in the dark with lights set up around the hole.

Mickelson was 1 up after 16 holes, but Woods tied it with birdie from the fringe of the green on the par-3 17th hole.

Both birdied the par-5 18th and then parred the first playoff hole before it went to the par-3 extra hole that they kept playing until there was a winner.

Only 700 invited guests were allowed to watch the event billed as golf's first pay-per-view broadcast.

It was marred by technical difficulties with viewers unable to view it on their televisions after paying $US19.95.

Turner and Bleacher Report representatives sent out links on social media allowing people to view it for free on their computers and mobile devices.