The German has had an incredible career with many highlights including becoming the first ever World Number One, claiming 42 European Tour wins, winning 11 senior Major Championships and being a Ryder Cup winning player and captain.
But he will forever be synonymous with Augusta National Golf Club, having won the Green Jacket in 1985 and 1993 and maintained a remarkable record well into his Seniors career.
The 63-year-old finished in the top ten just six years ago and two years later had a very real chance of victory heading into the final 18 holes.
This week, he fired an opening 68 to become just the second player in the last 30 years after Tom Watson to shoot a round in the 60s in his 60s at Augusta and, when he followed it with a 73, he assured he would be around for the weekend for the 27th time in his 37 appearances.
"Let's have a toast to that," he said.
"I don't know what the secret is but I've been fairly competitive on the Champions Tour and I've had some good finishes here the last five or six years.
"I love this place, even though I'm probably a hundred yards behind some of the longest hitters out there now.
"I've had to hit more three woods into par fours and two hybrids than ever before, partially because it's so wet and partially because I'm just getting shorter.
"It actually makes me feel older when I play with these young guys and I see how far they hit it and how short I hit it. It makes me feel older, not younger.
"I like this golf course. I think I know how to get around it, even though I hit very long clubs. But it's certainly not easy.
"There have been so many great players here before me... from Jack Nicklaus to Gary Player to all the greats that have competed here, and to be the oldest to make the cut, it's certainly an achievement.
"Hopefully I get to play a few more years and enjoy this place."