Former Mavericks Dir of Quantitative Research & Development Haralabos Voulgaris, who became "a polarizing figure within the organization as his decision-making influence increased," compared the franchise's "dysfunction during his tenure to 'high school drama,'" according to Tim MacMahon of ESPN.com. During his first interview since he parted ways with the Mavs a month ago, Voulgaris discussed "in depth the franchise's internal issues -- particularly the tension between himself and longtime Mavs general manager and president of basketball operations Donnie Nelson, who was fired in June." Voulgaris' contract expired recently, and he said that he had "no interest in continuing in his role." Voulgaris on the ESPN Daily podcast said, "Changing the organizational structure of the Dallas Mavericks was never something I was interested in unless I was going to be the guy in charge, and I wasn't even sure. I never actually wanted to be the guy in charge until it became clear that the guy in charge didn't want me around." Voulgaris said that he had "very little interaction with Nelson despite technically reporting to him in the organizational structure." Voulgaris communicated "directly with [Mavs Owner Mark] Cuban and, more frequently, with [former Mavs coach Rick] Carlisle." Voulgaris denied "some details in a June story in The Athletic focusing on the internal controversy surrounding him in the franchise, such as the claim that he dictated lineups and rotations to Carlisle" (ESPN.com, 10/21).