Juan Martin del Potro revealed his Davis Cup heroics were completed despite a broken finger.
Del Potro staged a stunning fightback to record a 6-7 (4-7) 2-6 7-5 6-4 6-3 win over Croatia's Marin Cilic in the fourth rubber on Sunday.
That drew Argentina level before Federico Delbonis beat Ivo Karlovic to secure his nation's first Davis Cup title.
However, Del Potro finished his comeback with a broken finger on his left hand.
"It happened when I tried to catch a ball in the fifth set," he said.
Del Potro added: "This was an emotionally exhausting match and one of the biggest wins of my career.
"Thanks to all those who prevented me from retiring, I was very close to never playing again and, well, here I am."
Cilic said he was content with his performance despite the defeat in four hours, 53 minutes.
"It's a very hard defeat to take, although I am pleased with the level of my tennis," he said.
"I am very disappointed but I have no regrets because I gave all I had and it was just one of those days when it didn't come off."