By Andrew Holleran One of the most-groundbreaking quarterbacks in the history of football died on Monday. Marlin Briscoe, the first Black quarterback in the history of the AFL, died at the age of 76, according to multiple reports. “His daughter, Angela Marriott, told The Associated Press that Briscoe, 76, died of pneumonia at a hospital in Norwalk, California. He had been hospitalized with circulation issues in his legs,” 9News in Denver reported. The former quarterback turned wide receiver played for the Broncos, Bills, Dolphins, Chargers, Lions and Patriots over the course of his nine-year p…