Yahoo Sports reports: U.S. forward Christian Pulisic trained on his own during practice Monday while he rehabilitates a calf injury that limited him to one half of action in the Americans' opening World Cup victory last week. Pulisic participated in individual work and then went to the gym while his teammates practiced at their training base in Irvine, California. The AC Milan attacker got kicked in the calf during training last week, and he left the Americans' 4-1 victory over Paraguay at halftime for precautionary reasons.