U.S. defender Jeff Agoos will miss the rest of the World Cup because of a calf injury. Agoos, 34, suffered a moderate strain of the medial gastrocnemius in his right calf during the first half of the USA's 3-1 loss to Poland Friday. There was no contact involved in the injury. The San Jose Earthquakes defender will be sidelined for approximately 4-6 weeks. With 133 caps, Agoos is second on the USA's all-time cap winners list behind Cobi Jones, and holds the U.S. record for starts with 123, including all three group matches during this year's World Cup. ''We are very disappointed for Jeff,'' said U.S. coach Bruce Arena. ''He has made an outstanding contribution to this team, and we will wish him a speedy recovery. We selected this 23-man roster with the belief that every player is capable of making a contribution, and we are confident that whoever we put on the field will help us to be successful on Monday.'' The USA meets Mexico in the round if 16 Monday, June 17 (2:30 a.m. ET, live on ESPN and Univision.