[youtube https://www.youtube.com/watch?v=dtA-t80Q2zs&w=480&h=390]  Would you trade a cherished Wayne Gretzky hockey card for one of Felix Potvin? Dallas Stars goalie Kari Lehtonen would . . . and has. And he'd do it again in a heartbeat. Lehtonen revealed that and so much more on Thursday evening during a signing at his home with Panini America hockey acquisitions guru Alex Carbajal. (more…)