CNN — The Cleveland Cavaliers became just the eighth team in NBA history to start a season 12-0 after earning a hard fought 119-113 win over the Chicago Bulls on Monday night. In a back and forth game in Chicago, the Bulls opened up a nine-point lead with 4:26 remaining in the third quarter, before the Cavaliers went on a run to go ahead by three points entering the fourth. The Bulls managed to tie the scores at 106-106, but Cleveland outscored its opponent down the stretch to cement its place in an exclusive NBA group. It’s the best start to an NBA season since the record-breaking 2015-16 Gol…