The alliance could see players like the world's number one Dustin Johnson compete in more European Tour events
Golf's two largest professional tours have announced a new "strategic alliance", which is said to usher in a new era for the global game.
The US-based PGA Tour is joining the European Tour, based in the UK in Wentworth.
They will work together on commercial opportunities and international media rights.
The deal will also affect the schedule, prize money, and playing options for members of both tours.
As part of the deal, PGA Tour Commissioner Jay Monahan will serve on the board of the European Tour.
"This partnership is a historic moment for golf," said Keith Pelley, CEO of European Tour.
"It's a great opportunity for both the European Tour and the PGA Tour to discover ways to come together at the pinnacle of our sport and work together for the benefit of men professional play. "
Monahan added," We are delighted to announce this further strengthening of our partnership with the European Tour, and look forward to working together towards benefit of the men's professional game and for golf fans around the world. "