Brissett competing for work: 'I'm not the young pup anymore'

FOXBORO — Jacoby Brissett lingered on the practice field following Tuesday's rainy workout at Gillette Stadium. He threw to players most Patriots fans might have a hard time recognizing, like tight end James O'Shaughnessy and receivers DeAndrew White and Cody Hollister. Anything for a few extra reps.  Brissett is the clear third-string quarterback behind what is probably the top starter-backup tandem in the NFL. Though he saw about the same number of total throws as Tom Brady and Jimmy Garoppolo during the first mandatory minicamp session of the week, there are still practice periods where Brissett's time behind center doesn't last much longer than a minute.  During one 11-on-11 drill Tuesday,