Bob Robertson is 77 and a faithful golfer in more ways than one.
The Tennessean plays golf four days a week and says he asked God to let him score a hole-in-one for a good cause. Robertson not only got a hole-in-one last month, he shot a hole-in-one three times in 29 days on the same hole.
He's an Air Force veteran who had a stroke six years ago, which left him blind in one eye.
Robertson says the improbable golf shot wasn't by chance. He planned it.
"I told God if he let me that win that money, that I'd donate that money to mission work and he let me win it," Robertson said. "I know it might be hard to believe, but it's true."
Robertson's granddaughter is studying to be a missionary and is leaving Saturday for a mission trip to Indonesia.
Robertson plays in a senior golf league at the Smyrna Golf Course every Tuesday. Two of his hole-in-one shots were during league play, making him the winner of a $500 pot to which 75 seniors contributed.
"After I got the hole in one for the prize money, one of my friends got awfully close to a hole in one, so I decided if they were going to slice up the prize money I wanted a second slice of it," Robertson said.
He says even after a stroke and five heart-bypass surgeries, he wants to improve his golf game.
"What I've been trying to do is smooth out my golf swing. I was reading an article just now about how to get it right and yesterday I broke 80 for the first time since last summer," Robertson said.
For all of the people who look to him for inspiration, "I tell them that I didn't do it alone. Faith did it."
The director of the Smyrna Golf Course, Hal Loflin, told ABC News that he can't believe Robertson's accomplishments.
"I've never seen anything like it and I've been a PGA pro for 23 years," Loflin said. "I'm jealous and envious because I've playing since 13 and never made one."
Loflin said Robertson is a celebrity on the golf course. The hole where Robertson has hit his multiple hole-in-one shots is a par 3 and roughly 109 yards. Robertson plays off the tee designed for older golfers.
As for another hole-in-one, Robertson says just wait and see.
"I've got some more coming," he said.