The last time the Blackhawks headed to Boston they were in search of a victory to regain home-ice advantage.

This time, they're after a much bigger prize.

The Hawks took a giant step toward capturing their second Stanley Cup in four seasons Saturday night when they topped the Bruins 3-1 in Game 5 of the finals at the United Center. The victory gave the Hawks a 3-2 lead in the best-of-seven series with Game 6 Monday night at TD Garden in Boston.

Patrick Kane, drafted No. 1 overall by the Hawks six years ago to the day, had two goals and Dave Bolland added an empty-netter to provide the offense while goaltender Corey Crawford earned the victory. The Hawks improved to 11-2 on home ice during the postseason as they held the Bruins to just a Zdeno Chara score in the third period. Tuukka Rask suffered the loss in goal as the Bruins fell to the brink of elimination.

Both teams appeared to suffer significant injuries in the second period as Bruins center Patrice Bergeron left the United Center in an ambulance for observation at an area hospital and Hawks captain Jonathan Toews did not take a shift in the third period.

The Bruins' Johnny Boychuk leveled Toews in front of the Hawks net during the second period but he remained on the bench. Earlier in the game, Toews took an elbow to the head from Chara.

Joel Quenneville on Jonathan Toews:

"We're hopeful he'll be ready next game," coach Joel Quenneville said after the game. "Upper body. We'll see how he is (Sunday). I checked on him a couple of times. I think he wanted to play."

History suggests the Hawks are in position to win the title as the 22 teams that have won Game 5 after splitting the first two contests have gone on to hoist the Cup 15 times since the best-of-seven format began in 1939.

Hawks winger Andrew Shaw:

"It's pretty surreal," Hawks winger Andrew Shaw said. "But we have to focus going into the next game just like we came into (Saturday). We have to be hard. They're going to push back. Their backs are against the wall.