Knicks owner James Dolan was having some fun during a Sphere Entertainment earnings call Tuesday when he cracked a joke that alluded to a star of another team. According to The Athletic’s Mike Vorkunov, Dolan made the joke when he was asked about the SG&A costs — the costs related to running the business day to day that exclude direct production expenses — during the call. “Boy, I’m really tempted to crack a joke here,” Dolan said. “So I guess I will. So SG&A is a great basketball player. And when we get to the Finals, I’m sure we’re going to beat them.” Knicks owner James Dolan sitting in the front row during Game 6 against the Hawks. Charles Wenzelberg / New York Post The Knicks and Garden boss was alluding to the nickname for Oklahoma City Thunder star Shai Gilgeous-Alexander, who is commonly referred to as SGA for short. And SGA has become a bit of an antagonist for the Knicks during a recent meeting when the Thunder visited Manhattan and defeated the Knicks 103-100 on March 4.…