On the Mets Seaver won a World Series in 1969 and a National League pennant in 1973. He won the Cy Young Award three times while he was with the Mets, in 1969, 1973 and 1975. The Cy Young Award is given to the best pitcher of the year in each league. He also won the Rookie of the Year award as the best first year player in the league in 1967.