The San Jose Sharks drew even with the Pittsburgh Penguins with a goal midway through the second period, but the 1-1 deadlock didn't last long.
Less than 80 seconds later, Sidney Crosby fed Kris Letang from behind the net, and the defenseman made no mistake - scoring his third of the playoffs to restore his team's one-goal lead.
The 29-year-old blue-liner now has points in five of six Stanley Cup Final games.
