The holed bunker escape came shortly after he performed a great up and down on the 18th hole in regulation play to force the play-off with Berger.
It simply wasn't in the cards.
Berger's 155-yard approach from the left rough stopped just on the front of the green.
On the walk to the green, he and caddie Michael Greller didn't say much.
Making his first appearance at the tournament, Spieth immediately took a liking to the TPC River Highlands course with an opening 63 then held the lead all week despite not having his best game.
Spieth and Berger tied at 12-under-par 268 heading into the playoff.
Sunday's win was Spieth's first of 2017 and his fourth career playoff victory. "I put the same kind of swing as the other bunker shot, I was just at a little different angle and it took a little right bounce and cut spin and it rolled up the hole", Spieth said.
Lee's only win on the tour was in 2015.
This was a victory to remember.
"That s incredible", Spieth said. "But, yeah, that was very memorable, and I certainly soaked it in".
Spieth followed it with a shaky tee shot on the par-5 13th, which was a hole he's struggled on all week with a double bogey and bogey.
Playoff competitor Daniel Berger walked across the green and exchanged low-fives with his good friend Spieth, as cheers reverberated in the natural amphitheater. The consistency that propelled him to the final pairing failed him, and he finished plus-2 for the day. This followed him holding a three-shot lead after three rounds past year, shooting a 74 in the last round and finishing fifth. "I felt more comfortable in the bunker than from four feet (and) I got really lucky to hit the tree and have it go in the fairway". Spieth's playing partner Boo Weekley sat one shot further adrift on nine-under with Paul Casey and Patrick Reed. "But you can't do anything about that". "I really wish that I didn't make it exciting. And I went nuts", Spieth said. "But at that point I'm like, okay, nothing insane, Daniel". Needless today, we're sure he'll be back again. "I guess I won it in style, but didn't win it the proper way for competing against a buddy".
3 - Rory McIlroy enjoyed a better day on Sunday.
But Spieth turned the tide in a flash.
He also told the crowd after winning, "I'm probably going to buy a house here".