The pair of friends had something to say to each other after they each drained birdie putts on back-to-back strokes.

Scottie Scheffler showed his trash-talking side that is legendary in Dallas circles and illustrates the ultra-competitive nature of golf’s No. 1 player. Tom Kim expected no less. The Presidents Cup turned spicy on Thursday when the 22-year-old Kim took his celebrations to another level after he buried a birdie putt from just inside 30 feet on the par-3 seventh hole.

The Presidents Cup turned spicy on Thursday when Scottie Scheffler responded to Tom Kim's celebratory "Let's go!" by matching his birdie and shouting, "What was that?"

Until Tom Kim poked the bear. The 22-year-old South Korean thought he was finally on the board as he sunk a winding, slow-rolling 27-foot birdie putt on No. 7 to potentially bring the match within one.

After a rainy morning, sleepy opening ceremony and muted Canadian crowd, this Presidents Cup was finally coming alive. Tom Kim, human sparkplug, was up to his old antics. Long putts. Fist pumps. Guttural screams.

Tom Kim lives for the Presidents Cup, and he's not afraid of an added celebration — not even in front of world No. 1 Scottie Scheffler.

Early on Day 1 of the Presidents Cup, Tom Kim drained a long putt to put the pressure on Scheffler. But Scottie didn't become the best in the world by shrinking from a challenge: Ooooh baby we got a Presidents Cup going.