The Simon Gratz relays have been blazing this year, and currently hold the top US times in both the 4x200 (1:27.96) and 4x400 (3:20.14), as well as the 1600 Sprint Medley Relay (3:34.1). They'll get another chance to shine this weekend at the Collegiate Invitational High School Relays, racing both the 4x200 and 4x400.