CLEVELAND — The Cavaliers won't start this season with a record of 15-0 like they did last year — they are 7-3 — but coach Kenny Atkinson and his staff are flirting with another version of 15-0.

Through the Cavs' 128-122 win over the Chicago Bulls on Nov. 8 at Rocket Arena, Atkinson had gone 10-0 on coach's challenges this season.

Atkinson explained he relies on Cavs assistant coach Andrew Olson to decide whether to challenge a call. Olson served as the team's shooting coach the past seven seasons and received a promotion last month, according to the Cavs media guide. Now Olson is the man with his eyes on a screen, studying replays in real time. In other words, he's the secret weapon to the Cavs reaching a perfect 10 on challenges through their first 10 games.

"I hope he's not

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