The oft-outspoken owner of the Dal - er, sorry - "the World Champion Dallas Mavericks" has never shied away from confrontation, so no one should expect that he would have quietly accepted Ross Perot Jr.'s allegations.
As is his trademark, Mark Cuban took it a step further.
Last year, Perot, who in 2000 sold a controlling interest in the club to Cuban for $285 million, filed suit to have Cuban removed as the team's owner. Perot, son of the billionaire businessman by the same name, claimed that the Mavs were losing money and were the "worst franchise" in sports, according to CNN affiliate KDAF-TV.
Well, the Mavs actually turned out to be the best franchise in basketball this year when they trounced the heavily favored Miami Heat in six games this month.
Dirk Nowitzki & Co. did their talking on the court; now, Cuban's attorney is talking in the court, filing a motion for summary judgment to have Perot's case thrown out.
KDAF called the three-page response "pithy" and "humorous," while TMZ, which posted the motion on its website, dubbed it "the most badass legal doc ever." (Having perused a few legal documents in my career, I'm siding with TMZ on this one; KDAF is understating it.)
The motion begins by noting that Perot's Hillwood Investment Properties Inc. is a 5% owner in the franchise, compared with Cuban's 76%. It then recounts Hillwood's claims that Cuban is careless, reckless and prone to questionable business and personnel decisions.
Flip to page two, and there is a near-full-page picture of the jubilant Mavs celebrating their national championship with Nowitzki holding the Larry O'Brien Championship trophy aloft.
Above the photo reads: "On June 12, 2011, the World Champion Dallas Mavericks defeated the Miami Heat to claim the franchise's first NBA championship. A true and correct photo of one of the many victory celebrations is incorporated herein."
The document refers eight times (again, in three pages) to "the World Champion Dallas Mavericks."
Cubanâ€™s attorney Tom Melsheimer told KDAF, "We put that in there eight times because nine was too many, and seven wasn't enough." He added that Cuban thought the lawsuit was rubbish when it was filed, and he really thinks so now.
The motion closes by saying Hillwood's claims have no merit and asks the judge to toss out the case and award the Mavs and its management "such further relief to which they are titled (although they are quite content at the moment)."
Should the court not see fit to dismiss the case, Melsheimer told KDAF that the Mavs management welcomes its day in court.
"We're very comfortable to try a case in Dallas County, Texas, where a bunch of Dallas County citizens get to decide whether the Mavs are well run or not," he said. "I like our chances."