Here are a pair of heroes and zeroes from training camp Tuesday morning:HeroesJeremiah Trotter Jr., LB: The third-year linebacker hasn't broken through into a starting role yet, despite showing lots of talent and even more drive on the football field. During a string of plays that saw the first team offense facing the second team defense, Trotter got in the backfield in a big way on back-to-back plays. Eli Stowers, TE: We haven't been shy to criticize the Eagles' first two draft picks for being virtually invisible in practices this summer. 10, including a very impressive grab on one of those series with the Eagles inside their own 10 yard line. Payton also had a brain fart, dropping a shotgun snap that he luckily picked up himself in an 11-on-11 play.