Open Championship 2018 Playoff Betting Odds

In the event that The Open Championship 2018 ends in a Monday Playoffs, BetOnline will be offering odds that can be found here.

While this year's British Open may not end in a Playoff, the top of the leaderboard was especially tight as Sunday's play began winding down.

In the event of a Playoffs, the format would be as such:

Courtesy of CBS Sports:

    Format: Four-hole aggregate
    Holes: 15-18

This format was first used in 1989 when Mark Calcavecchia beat Wayne Grady and Greg Norman. More recently, Zach Johnson bested Louis Oosthuizen and Marc Leishman at St. Andrew's in 2015.

In total the four-hole aggregate playoff has been used nine times by The Open to crown its Champion Golfer of the Year.  

At Carnoustie, the four playoff holes will be 15, 16, 17 and 18 with only one par 3 between them. That closing run of 16-17-18 is among the toughest finishes in all of major championship golf, and this week those holes have ranked as three of the four hardest holes on the course.

- Don Shapiro, Gambling911.com