Despite being legally blind, Bill McMahon of Framingham, Mass., has spent the last 28 years on the golf course. And in two weeks, he’ll take his game to the national stage, competing in the National Blind Golf Championship in Portland, Ore.

On the course, McMahon and his coach Pete Friel work as a team, tinkering with everything from club selection to reading the greens.

“The only difference is that golf becomes a team game for the blind and visually impaired,” McMahon says. “The player and his or her coach play the game as one.”

Check out McMahon’s story in the video above.