There are big changes in the world of golf club endorsement deals every year, but as you can tell from the photo above of the young Luke Donald, Donald has been playing Mizuno since he was a child. He continued playing Mizuno through college, then signed a sponsorship deal with the company in 2003.
And now Donald has re-signed with Mizuno, continuing "one of the longest-standing equipment relationships in golf," the company says, and "signing to continue to be a brand ambassador for years to come."
Of course, this post was really just an excuse to run the photo of young Luke.
(Photo credit: Courtesy of Mizuno Golf)