Last year's 4x4 champs: Sanya Richards, Natasha Hastings, Allyson Felix and Mary Wineberg. Photo by Steve Ruark

Last year's 4x4 champs: Sanya Richards, Natasha Hastings, Allyson Felix and Mary Wineberg. Photo by Steve Rurak

Our friends at USA Track & Field have announced more athletes competing in Saturday’s USA vs The World races. Olympic 100-meter bronze medalist Walter Dix jumps into the U.S.’s 4×100-meter relay pool. He’ll be joined by Darvis Patton and 2004 Olympic 200 champ Shawn Crawford. As previously announced, Terrence Trammell will be part of that pool, too.

Also in the field are Jamaica and Trinidad & Tobago, with three-fourths of their teams that won gold and silver, respectively, at the Beijing Olympics. For the Jamaicans, look for Nesta Carter, Michael Frater and Asafa Powell on the Franklin Field oval. Trinidad & Tobago brings Richard Thompson (silver medalist in the Beijing 100), Marc Burns and Emmanuel Callender.

For the women’s 4×1, Torri Edwards and Muna Lee join yesterday’s announced U.S. pool.

In the men’s 4×400, Olympic 400 champ LaShawn Merritt (previously announced) will be joined by Olympic 400 hurdles champ Angelo Taylor David Neville (bronze medal in the flat 400). Those three won gold (with Jeremy Wariner) in the Olympics last summer. Kerron Clement (silver in the 400H) and Darold Williamson are also going to be there Saturday. Their top competition should come from Bahamas, which will have the same line-up that won 4×4 silver at the Bird’s Nest: Andretti Bain, Michael Mathieu, Andrae Williams and Chris Brown.

The women’s 4×4 includes Sanya Richards, Allyson Felix and Natasha Hastings for the U.S. (Richards and Felix won gold in the event last summer; Hastings contributed a leg in the prelims.) Team Jamaica brings Shericka Williams, Rosemarie Whyte, Novlene Williams-Mills, and Olympic 400 hurdles gold medalist Melaine Walker.

The men’s program will also include a distance medley, while the women will have a sprint medley. Leonel Manzano, Khadevis Robinson and Lopez Lomong will be running for the U.S. The American women will go with Hazel Clark, Rachelle Smith, and Lisa and Miki Barber twins.