The Detroit Tigers will be holding its annual Negro Leagues Weekend (NWL), presented by Comerica Bank, 7/21-7/23, at Comerica Park. Mark S. Lee will be moderating and emceeing a panel discussion with past players, Saturday, 7/22, 4:45 to 5:15 p.m., in the Big Cat Court (near the Team Store). This year’s game will feature the…