one for Ferrari as Piquet finally passed Pironi for fourth, and Villeneuve retired with a broken driveshaft. On lap 25, Reutemann took the lead from Patrese just a lap before Patrese pitted with a misfiring engine. He rejoined the race with a new spark box, but after two more stops for the same problem, finally retired with a broken fuel pickup. Patrese's retirement left Reutemann with a three-second lead over teammate Jones, who immediately began closing the gap by half a second per lap. Any questions about team orders letting the number one driver through were soon answered. On lap 32, while lapping Marc Surer's Ensign, Reutemann slid wide in the esses on Pine Avenue, and Jones went through for the lead. Within 12 laps, the defending World Champion had stretched out a lead of ten seconds. At the same time, Reutemann was extending his lead over Piquet to 36 seconds. On lap 41, Jacques Laffite tried to go by Cheever as they entered the right-hander after the pits. Instead, he ran into the back of the Tyrrell, bending the nose of his Ligier and damaging Cheever's gearbox. Laffite had to limp around the entire course, and as he was finally about to enter the pits, Bruno Giacomelli approached, with Jan Lammers between the two of them. Giacomelli started to pass both cars on the inside, but realized he couldn't when Laffite turned to enter the pit lane. Giacomelli tried to go around Lammers on the other side, but it was too late. He ran over Lammers's ATS, pushing him into the wall. Laffite's retirement interrupted an extended battle with Pironi, Cheever and Andretti for fourth place. Andretti passed Cheever for fifth on lap 43, then traded fourth several times with Pironi, before finally taking the position for good on lap 54. Pironi's Ferrari had developed a fuel feed problem and Cheever was also able to go by to take fifth. In making the pass, however, he lost his damaged second gear, by far the one most used on the tight street circuit. The positions remained the same for the last quarter of the race with Jones and Reutemann easing up to take the third consecutive one-two for Williams. Piquet, having lost his shot at the leaders while bottled up behind Pironi, finished third, 35 seconds back. Mario Andretti thrilled the American crowd with his fourth place, just ahead of