BUFFALO, N.Y. — Two games at the Prospects Challenge have taught Oskar Steen one thing about pro hockey on this side of the Atlantic: Time and space are limited commodities.



“It’s a bit different between the small rinks and the big rinks,” said the right-shot prospect from Karlstad, Sweden. “I have to get used to it and get better here.”



Fifteen feet may not seem like much. Yet for a 21-year-old who grew up on the 100-foot-wide rinks of Sweden, the 85-foot-wide sheet at HarborCenter can feel like swimming in a pond compared with the ocean. Predators arrive much faster in frozen North American waters than they do in Europe. Life preservers are not available.



Still, in Saturday’s 4-3 loss to Buffalo, Steen did not look like a fish out of water. He snapped home a power-play shot from the left circle — finding a soft spot in Buffalo’s net-front coverage, receiving a quick pass from Jakub Lauko and beating...