Carrie Underwood: Birthday can wait for husband Mike Fisher

NASHVILLE, Tenn. -- Mike Fisher's birthday present will have to wait.

Country music superstar Carrie Underwood said she didn't get Fisher -- her husband and the Nashville Predators' captain -- anything for his 37th birthday on Monday. She's hoping Fisher can celebrate his birthday on another day -- with the Stanley Cup if the Predators beat Pittsburgh for the championship.

"I didn't get him anything," Underwood said in an interview on NBC during intermission after the first period of the Predators' 4-1 win, which tied the series 2-2. "I'm terrible."

Underwood said when she performs, there's no anxiety. When she watches her husband play hockey, she feels much differently.

"I'm way more nervous than I ever would be for myself," she said.