They continued their perfect start, improving to 14-0 on Friday night with a 144-126 win over the Chicago Bulls in an NBA Cup opener that served as another showcase for a Cavs team clicking like never before. After the final buzzer, Donovan Mitchell, Darius Garland and Jarrett Allen celebrated more history by dancing on the Rocket Mortgage FieldHouse court with a giant green frog, which has quickly become an impromptu mascot to an unscripted start. “It’s Cleveland,” Allen said, trying to explain the amphibian’s sudden arrival. “It’s just a vibe in the city, and I hope it doesn’t change.”