Players almost always do some form of activity before they hit the course, but the type of exercise varies from player to player. Running is fairly common, followed by light stretching to activate all the muscles for the day ahead. Apparently Tiger Woods used to hit the weights hard before his rounds as a way of relieving tension.
Many pros teeing off in the afternoon will generally keep an eye on the morning TV coverage, too, especially during the majors, to get an idea of how the course is playing.
But as far as when players get to the course itself, it usually varies from 60 to 90 minutes.
Jordan Spieth spends about 90 minutes from the moment he first walks onto the practice range from when he leaves for the first tee.
Woods was about the same, though he stops so frequently that it’s not a very efficient practice session, by design. He’s trying to set his body into a similar rhythm that
Dustin Johnson spends about 30 minutes on the range, and talks most of the time. He chips and putts either side of that.
Indeed, the most unusual thing about Koepka’s Sunday routine isn’t the brevity of it, but that he didn’t hit balls at all. He simply putted for 45 minutes. Strange on the face of it, but when you consider that his warm-up started long before he arrived at the golf course, it’s hardly strange at all.
