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Former Duke star and top 3 pick Jayson Tatum hits game-winner in his first game as a pro

He's ready for the big time.

Some people were unsure if Jayson Tatum was going to be ready for the big time when the Boston Celtics picked with the third overall pick in this year's NBA Draft. The minutes aren't going to be readily available, but the Duke standout is certainly making his case as he hit this game-winner for the Summer Celtics over the Philadelphia 76ers:

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Tatum had a nice first outing with 21 points and directly led his team to a victory. The Celtics are surely hoping for more of that when the regular season comes around.