Houston Dynamo goalie Pat Onstad, the oldest player in MLS at the age of 42, will join the Canada national team training in Florida for its game at Jamaica on Jan. 31.

Onstad, who has 56 caps with Canada, is one of nine MLS players in the camp.

"I love being involved," Onstad said. "It'll be nice to see some familiar faces and also some new young talent Canada has. It will be a great experience to train with them this week."

Four Toronto FC players -- Nana Attakora, Ali Garba, Julian de Guzman and Dwayne De Rosario -- are in camp. Four other MLS players were brought in by Coach Stephen Hart: Andre Hainault (Houston), Dejan Jakovic (D.C. United), Will Johnson (Real Salt Lake) and Antonio Ribeiro (San Jose).

Attakora was one of four players who received their first callups, along with goalkeeper David Monsalve of FC Inter Turku (Finland), midfielder Carlo Rivas of Club Deportivo Universidad de Concepcion (Chile) and midfielder Massih Wassey of FC Schalke 04 II (Germany).

Canada U-23s Randy Edwini-Bonsu, Derek Gaudet and Michal Misiewicz joined camp after their under-23 camp ended.

Toronto FC's Adrian Serioux withdrew from the camp because of an elbow injury.