Former UMass athletics director Bob Marcum has been hospitalized for complications from a stroke, Arkansas head coach John Calipari announced on Sunday. Marcum crossed paths with the Razorbacks coach during his time as AD at UMass beginning in 1993 until Calipari’s departure in 1996. He held the position until 2002 where he oversaw one of the most prominent decades in UMass athletics history. “My friend, mentor and AD at Umass Bob Marcum has been admitted to the hospital for complications from a stroke,” Calipari wrote on X. “He was an unbelievable servant leader who impacted so many coaches, …