CHICAGO (AP) — Goalkeeper David Bingham, defenders Steve Birnbaum and Brandon Vincent, and midfielder Perry Kitchen have been added to the U.S. roster for a training camp ahead of exhibition games against Iceland and Canada.

The U.S. Soccer Federation said Friday that a pair of San Jose players had been dropped because of injuries: midfielder Fatai Alashe (groin) and defender Marc Pelosi (tendinitis).

With the additions of Bingham and Vincent, 12 of the 25 players headed to camp have never appeared for the national team. Vincent helped Stanford win the NCAA title last month along with forward Jordan Morris, who also is on the U.S. roster.

Training starts Monday at Carson, California, where the U.S. plays Iceland on Jan. 31 and Canada on Feb. 5.

The revised roster:

Goalkeepers: David Bingham (San Jose), Bill Hamid (D.C.), Luis Robles (New York Red Bulls)

Defenders: Kellyn Acosta (Dallas), Matt Besler (Kansas City), Steve Birnbaum (D.C.), Matt Miazga (New York Red Bulls), Eric Miller (Montreal), Tim Parker (Vancouver), Matt Polster (Chicago), Brandon Vincent (no club)

Midfielders: Michael Bradley (Toronto), Mix Diskerud (New York City), Jermaine Jones (no club), Perry Kitchen (no club), Darlington Nagbe (Portland), Lee Nguyen (New England), Tony Tchani (Columbus), Wil Trapp (Columbus)

Forwards: Jozy Altidore (Toronto), Ethan Finlay (Columbus), Jerome Kiesewetter (Stuttgart, Germany), Jordan Morris (no club), Khiry Shelton (New York City), Gyasi Zardes (Los Angeles)