Freestyle motocross champion Jeremy Lusk died of head injuries Tuesday as a result of an earlier crash; he was 24. Lusk was riding in the X-Knights event in Costa Rica when he attempted to do a Seatgrab Indian Backflip and lost control of his bike. After the crash Jeremy Lusk was taken to Calderon Hospital ICU in San Jose, Costa Rica where he was pronounced dead at 11:03pm. In the room with Jeremy when he died were his parents Chuck and...