Joakim Wahlstrom was in Charlotte on Friday and Saturday night watching his son Oliver play for the Sound Tigers, then headed home to Savannah, Ga., on Sunday. Before he was settled in, he got a call from his son: Get to Long Island.



The elder Wahlstrom caught the first flight out on Monday morning and was at the Marriott next door to the Coliseum in enough time to help Oliver pick out a tie to wear.



“It got a little emotional, so I had to get out of there before he teared up,” Oliver said after his NHL debut in the Isles’ 3-2 overtime win against the Blues.



The day before, the younger Wahlstrom got off the bus in Connecticut at 7 a.m., arriving from Charlotte with his Sound Tigers teammates. In those two games against the reigning Calder Cup champion Checkers, Wahlstrom had one assist and a fight. He was the clear choice for the Islanders to call up when Jordan Eberle went down with a lower-body injury on Saturday, given his ability to play...