There’s a major tournament this week in Michigan. It’s the men’s Senior U-S Open with first round action today at Lake Orion on the Old Course at Indianwood Golf and Country Club.Michigan is hosting a major tournament for the men this week. The Senior U.S. Open tees off today at Lake Orion on the Old Course at Indianwood Golf and Country Club. A lot of the crowd will be following fan favorites Tom Watson and Fred Couples, who are teamed up for the first two rounds of the event that concludes Sunday. Indianwood has previously hosted the 1989 and 1994 U.S. Women's Open and has been the site of the Michigan PGA Championship and Michigan Open.