Jason Spezza is waiting for the phone to ring.

He feels fine physically, so if he gets the call, he'll gladly join Team Canada for the world hockey championships in Slovakia.

He could be one of as many as six Ottawa Senators to play for their respective countries this spring.

Milan Michalek has already been contracted by the Czech team and said he'll play, Ryan Shannon has agreed to play for the United States, and Nick Foligno is pondering an offer to join the U.S. team.

Defenceman Erik Karlsson hasn't yet received an invitation to play for Sweden but it's believed to be in the mail, and Marek Svatos, who played for Slovakia last year and has a history with the national team, is expected to play for Slovakia.

Two players have already sent their regrets.

Goalie Craig Anderson said he won't play for the U.S. even if asked, since his wife Nicole is pregnant, and defenseman Filip Kuba said right now it doesn't look like he'll play for the Czech team.

My back is still not 100 per cent," said Kuba. "I had a good rest last summer and I think I need another good rest this summer."

Shannon could be in the same boat as Anderson. His wife Jessica is also pregnant, with the baby expected in June.

"I hope the baby's not a month earlier or I won't be (in Slovakia)," said Shannon.

Spezza has a long history with Team Canada. He's played in three world juniors, two world championships, and was a reserve on the 2006 Olympics team.