OKLAHOMA CITY -- Monday night the fans came to Thunder Alley.
Around 10,000 people were expected to be outside the game.
Security was beefed up to handle the crowds.
Doug Duncan was on his third play-off game in the alley.
"Oh, it's going to be loud. Let me tell you, I was here Wednesday night and it was crazy out here. It's double the people tonight compared to Wednesday."
Police said they expect the crowds to grow with each game and will amp up patrols as needed.