Top joins FC Dallas Academy U-18 midfielder Daniel Garcia and former FC Dallas Academy defender Boyd Okwuonu on the trip.
The 19-year-old forward recently broke into the starting lineup for FC Dallas. He picked up his first career assist on a goal scored by Blas Perez against Real Salt Lake on May 26, 2012. Top made his first start and played the full 90 minutes in a U.S. Open Cup match on May 29.
"FC Dallas is very proud to have three representatives on the U.S. Under-20 National Team," said FC Dallas Technical Director Fernando Clavijo. "All three players are hard-working, talented young men with bright futures ahead of them."
Garcia has one assist for the 3-1-1 FC Dallas Reserves this season in just 47 minutes of action. Garcia also leads the FC Dallas Academy U-18 team with 18 goals in 23 games. The team currently leads the U.S. Soccer Development Academy with a record of 22-4-3 (69 points). Garcia verbally committed to the University of North Carolina in November.
A teammate with both Top and Garcia on the FC Dallas Academy U-18 team in 2011, Okwuonu played in 21 matches for the 10-1-5 conference champions last season. He then spent the second half of 2011 playing his freshman season at UNC, which claimed its second national championship in December. Originally from Edmond, Okla., Okwuonu started and played every match for the Tar Heels last fall, earning more minutes than any other field player on the team.