 In Italy, Senna came within a handful of laps of winning the race but on badly worn tyres he made a mistake which let Nelson Piquet through to take the chequered flag.Senna would move to McLaren (who had secured the use of the Honda engines to replace the TAG engines used from ) for and would win his first World Drivers' Championship.The season was also Senna's second worst in terms of pole positions, scoring only one in Round 2 at San Marino, his worst season being his rookie year in with Toleman.