 Complete the following phrase:  In September 2014, di Grassi won the first race of the season in Beijing, the first driver to win an all-electric motor race. He recorded two more consecutive podiums in Putrajaya with a second place finish, and in Punta del Este with third place to give him the lead in the championship. However, di Grassi had bad luck with a suspension failure in Buenos Aires, causing him to retire from the lead, and technical issues caused him to finish ninth in Miami, to lose the championship lead. He bounced back by finishing in third position at Long Beach, and second place in Monaco to give himself a four-point lead with four rounds to go. Di Grassis championship took a blow when he was disqualified from victory due to illegal modifications to his front wing endplates in Berlin; with second place in Moscow to Nelson Piquet Jr., di Grassi entered the season-ending double-header in 