 Complete the following phrase:  1972 saw changes to Monza. The 1971 race was the fastest Formula One race ever at that point in time. It was really just a bunch of straights and fast corners and F1 cars had become increasingly advanced and much faster, and the drivers were constantly slipstreaming each other around the circuit. A small chicane was put at the end of the pit straight and another one at the Vialone curve; Brazilian Emerson Fittipaldi won that race and his first Drivers Championship at only 25 years of age. His chief rival Jackie Stewart went out at the start with a broken gearbox. In 1973, Stewart punctured a tire early in the race and went into the pits to have it changed; he came out in 20th place and finished fourth in the race while Fittipaldi finished second; this was enough for Stewart to win his third and final Drivers Championship. 