December 4, 1990 – The Yankees lose former all-star pitcher and future pitching coach Dave Righetti after he signs a four-year $10 million contract to play for the San Francisco Giants.
Righetti came to the Yankees as part of the trade that sent Sparky Lyle to the Texas Rangers in 1978. He pitched for the Yankees for 10 seasons primarily as their closer from 1981, when he won the Rookie of the Year award, until 1989. He is most remembered for pitching a no-hitter on the Forth of July in 1983. He pitched in 522 games with a 74-61 record, a 3.11 ERA, and 224 saves.