The Pennsylvania Superior Court has ruled that the widow of a man who drowned during the Philadelphia Triathlon in 2010 cannot advance her lawsuit against the event organizers.The court ruled that the man, Derek Valentino, signed a waiver eliminating any liability on the part of the defendant prior to participating in the race.This ruling from the Pennsylvania Superior Court sets a favorable precedent for event organizers and triathlons.Triathlons like this, along with even more hard-core adventure races, and longer races …