‘Although Burgdoerfer’s time in the N.H.L. was brief and mostly unremarkable, Sabres Coach Dan Bylsma said he had served as a lesson in determination and resilience for prospects in the organization. And Burgdoerfer’s story — a common one in hockey, current and former teammates said — epitomizes the challenges of making it: how for all but the most celebrated prospects, getting a crack at the N.H.L. involves an odyssey.’