John-Michael Liles acknowledges it took him a while to get accustomed to Colorado Avalanche head coach Joe Sacco's way of doing things a year ago. Sitting on the bench as a healthy scratch 10 times turned out to be a bitter part of the learning process. "It's the toughest thing going," Liles said Sunday after the Avalanche completed their two-day training camp at South Suburban Family Sports Center. "It's the toughest thing that I've had to deal with in my hockey career, but it definitely made me stronger and I think it made me realize exactly what I need to do and figure out how I'm going to be successful going forward."