Don’t get used to it, but David Fizdale’s youthful Knicks created fireworks and history on opening night. Scoring a franchise-record 49 points in the second quarter and with Tim Hardaway Jr. adjusting superbly to his No. 1 option role, the Knicks captured their season opener with a 126-107 pounding of the even-younger Hawks. The Garden fell a few hundred fans short of a sellout against a Hawks team expected to compete for the NBA’s worst record. “I don’t want to put a cap on it,’’ Fizdale said before tipoff. “This team could catch fire and figure something out or this...
