A number of young Blackhawks are hoping to prove they're ready for full-time roles next season. Chicago hasn't been very active on the free-agent front this offseason, meaning players like Andrew Shaw, Dylan Olsen, Jimmy Hayes and Ben Smith will be have opportunities. All four have had busy summers: Shaw has already added 12 pounds of muscle, Olsen has worked on his footwork and shot, Hayes has gotten into better shape and Smith has resumed skating after season-ending surgeries for a hernia and torn cartilage in his hip.