Tyler Adams has joined the U.S. Under-20 team for fitness camp before the World Cup. (Bill Streicher/USA TODAY Sports)

HARRISON, N.J. – Tyler Adams is gone and has left the Red Bulls — for U.S. Under-20 national team fitness prior to the U-20 World Cup in Korea.

The Wappingers Falls, N.Y. native could miss three or four Red Bulls games, depending how the United States fares in the competition. He could miss three or four Red Bulls games.

The group stage runs from May 20-28. The knockout round runs through June with the final set for June 11.

A defensive midfielder, Adams helped the U-20s win their first CONCACAF U-20 Championship earlier this year.

The first player to participate in the Red Bulls’ Regional Development School program and progress through the academy system to the first team, the 18-year-old Adams made four starts and played in five games during the CONCACAF competition.

Since starting against Real Salt Lake March 25, Adams has entrenched himself into the Red Bulls Starting XI. He has started six of the last seven matches and has played in 615 out of a possible 630 minutes.

Sean Davis is expected to take over for Adams during his absence.