For the teams not rebuilding, they're winning with a roster mixture of veteran experience and skill. Today we are taking a look at the 10 oldest rosters throughout the NHL, and some are surprising! Based on current 20-man projected rosters these are the oldest teams in the NHL (using average age). 1. Pittsburgh - 30.0 2. Washington - 29.7 3. Tampa Bay - 29.1 4. St. Louis - 28.8 5. NY Islanders - 28.6 6. Toronto - 28.1 7. Vegas - 28.0 8. Dallas - 27.7 9. San Jose - 27.6 10. Minnesota – 27.3