For almost the full 48 minutes, the opening game of the first-round series between the Boston Celtics and Milwaukee Bucks on Sunday wasn't an attractive affair but that all changed in the final 11 seconds.The two teams played out a gritty contest which was filled with turnovers - a combined 35 - and multiple scoring droughts throughout the night.The Celtics were shorthanded and the Bucks were without a star outside of Giannis Antetokounmpo, which told whenever he went to the bench as they struggled for buckets.On paper, the game wasn't a spectacle and not many people had expected it to be.With the way the encounter was going, nobody could've envisaged the wild finish that it served up which turned it into an epic contest.After Malcolm Brogdon nailed a three-pointer from the corner, the score was tied at 96 with just 10.3 seconds on the clock.

A play was called to get the ball to Jaylen Brown, but after Eric Bledsoe gambled and looked to close out a potential pass to the shooting guard, Terry Rozier took matters into his own hands.

He escaped Bledsoe with a devastating crossover dribble and step-back that gave him all the space in the world to knock down a clutch three-pointer with less than a second to go.

"[Brown] was coming off a stagger, and I gave him a look and I kind of figured that Bledsoe would bite," Rozier said, per ESPN's Chris Forsberg.

"It kind of allowed me to make a move to get to my step-back [three-pointer]. That was an option for me to shoot, it was an option for Morris to slip to the basket [after screening for Brown]. Just all three options, and I went with mine."

His shot looked to be the game-winner and sent the crowd inside TD Garden into raptures.

But with 0.5 seconds remaining, Milwaukee still had enough time to get off a quick shot.

Down 99-96, the Bucks could only pull off a catch-and-shoot so when Antetokounmpo inbounded the ball to Khris Middleton, he had to force up a prayer from 35-feet and it was answered as he incredibly saw it drop.

The video review confirmed that he managed to just get the shot off in time and it dramatically sent the game into overtime.

"That's a play we've been practicing for a couple weeks now, preparing for that moment," Middleton said. "We actually flipped the side of the [floor] we usually run it in practice on.

"Just got a good look. Giannis was surveying the floor. [I] just tried to get open [and] knew it was at that point where it was a catch-and-shoot situation. So [I thought] if I get it in my hands, just let it go. Somehow it dropped in for me."

The Bucks went into the OT period with all the momentum and it seemed to have sapped the energy from the Celtics players and fans.

But Brad Stevens' men are made of sterner stuff and managed to overcome this disappointment to still come away with a 113-107 win in the end after a frantic finish.

"You have to fight, and that's what we did. We had each other's back, and we never stopped believing that we were going to win, and we did what we have to do in overtime," Rozier said.

The two teams will reconvene in Boston for game two on Tuesday night.

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