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Tom Watson placed an egg salad sandwich on the 13th hole on Thursday. The 66-year-old Watson wasn't littering with his leftovers, he was paying homage to an old friend and former caddie. 

Bruce Edwards died from ALS in 2004, but before his passing, he was a caddy for Watson. Since 2005, Watson has placed a sandwich at the bench of the 13th tee to honor the caddy that always packed the meal to eat on the reachable par-five. 

“He loved to caddy, and he loved to caddy here more than any place in the world,” Watson said of Edwards, via the Augusta Chronicle. “He just thought this was the neatest golf tournament there ever was. I loved to see his enthusiasm. His enthusiasm wasn’t much different at other courses, but just a little bit more when he came to Augusta. The excitement in his voice was just a little bit more.”

Watson finished his 43rd and final Masters on Friday, scoring a 78 to finish with an eight-over 152. Though he fell a few putts short of sneaking into the weekend, the round was not without its special moments. The patrons around Augusta honored Watson, the two-time Masters champion, at nearly every turn.

At one point, Watson's stroll down No. 11 even drew a standing ovation from the No. 12 tee and held up play. All the while, Watson -- a self-described member of the "old folks" crowd at the 80th Masters -- was appreciative and seemed to relish every moment. 

Watson was greeted by fellow former champion Ben Crenshaw and others behind the 18th green. It was his goal to stick around for the weekend, but it felt more fitting for Watson to be honored late Friday afternoon than if he finished early Sunday to much less fanfare. 

To be a part of the Masters for nearly a half a century makes Watson one the tournament's all-time names. Though his dominance occurred decades ago, he has maintained his place in the golf world with a surprise run in the 2009 British Open and as a captain of the United States' Ryder Cup teams. 

It was a great run, sir.

Tom Watson waves the patrons in his final Masters round. (USATSI)