Chris Boucher’s career began with the Golden State Warriors. During the team’s 2017–18 title run, Boucher began his NBA journey by signing a two-way contract. He spent most of the year playing for the Santa Cruz Warriors, and his NBA debut – a 79-second appearance against the Los Angeles Lakers in mid-March – was the only time he took the court for Golden State . He won a championship with the Warriors and was fired two weeks later.

He caught on with the Toronto Raptors, where he played a larger – though still small – role on a team that defeated the Warriors in the NBA Finals and won him two titles in two years.

Now he’s a proven, high-level role player in the league, a lanky guy who shoots threes, gobbles up rebounds and blocks shots. He is the only Raptor from that championship team still playing for Toronto, and on Monday he paid homage to his former team by exacting revenge on them.

The Warriors marched into ice-cold Toronto with visions of a solid win, where they welcomed back Steph Curry and Andrew Wiggins despite Draymond Green being sidelined with illness and a minor back injury. But their shooting was just as icy as the Canadian weather: In the first half, Golden State shot just 7 of 24 on three-pointers, 9 of 23 on two-pointers and 11 of 16 on free throws. However, they did some good defensively and controlled the ball with only five turnovers. And that’s why they were only down 52-50 at halftime, despite the miserable shooting.

Things seemed to turn around in the third quarter. They started a run at the start of the period, with a sure three-pointer from Dennis Schröder giving them the lead and changing the momentum. They maintained that lead and entered the fourth quarter with a 78-75 win. Things were looking good for a Warriors team that took an 18-3 lead after three quarters.

They quickly extended the lead to nine points, which gave them confidence to get back into the win column.

And then Boucher happened. Led by the former Warrior, Toronto went on a brilliant 14-4 run and took the lead a little more than halfway through the quarter. From there, the teams went back and forth and back and forth again until an Ochai Agbaji layup with 1:33 left gave Toronto a 102-101 lead, spelling doom for the Warriors.

Buddy Hield missed on the other side, and while the Warriors got a stop, Wiggins missed on the next possession. Golden State’s defense held strong and forced another stop, but with just under 50 seconds left, Curry forced a three-pointer and the miss led to an easy transition shot for the Raptors, increasing the score to 104-101.

The Warriors had time for a two-on-one, but Wiggins missed a three-pointer on the front end. They made another stop, got the ball back and called a timeout. They started a play from their own sideline with 3.8 seconds left, and Hield had a pretty good attack right away, but missed and ended the game.

Golden State lost 104-101 and has a losing record of 19-20 for the first time this year.

Curry led the Warriors with 26 points, seven rebounds and seven assists despite turning the ball over four times. Wiggins scored 20 points but, amazingly, has yet to win an NBA game in his home country. Scottie Barnes led the Raptors with 23 points, while Jakob Poeltl had a double-double with 13 points and 13 rebounds.

But it was Boucher who was the star. He finished the game with 18 points on 7-for-9 shooting…with 17 of those 18 points coming in the fourth quarter. For at least one day, the Warriors seriously regret letting him go.

The Warriors will finish their four-game road trip on Wednesday when they take on the Minnesota Timberwolves at 5:00 p.m. PT. With a win, the Dubs would have shared the road trip.