sentences:  He scored the Red Bulls' only goal of their 2–1 aggregate loss to D.C. United in the Eastern Conference Semifinals Series when he headed in a cross in the second leg.With that goal, he became the youngest player to score in the Major League Soccer playoffs at 16 years, 337 days (breaking DaMarcus Beasley's record by almost three years).Altidore was also youngest to start in a Major League Soccer playoff match on October 21 against D.C. United (16 years, 349 days).