during the final ascent to croce d'aune on stage 20, miguel ángel lópez was knocked off his bike in an incident with a spectator. before he got back on his bike, lópez hit the fan several times in anger. he would go on to lose almost two minutes on the group of other favourites at the end of the stage. even though uci regulations stipulate that a rider who engages in physical violence is to be disqualified from the event, lópez was given no punishment for his action. the uci announced on 2 june 2019 that they had launched an investigation into the jury's decision not to apply a penalty.