NHL commissioner Gary Bettman said the league has only four unvaccinated players as it opens up the 2021-22 season.

Bettman was in attendance for the regular-season opener between the back-to-back Stanley Cup champion Tampa Bay Lightning and the Pittsburgh Penguins on Tuesday night.

"Everybody banding together to do the right thing," Bettman said. "Maybe that's why hockey is the ultimate team sport."