DIED. Billy Martin, 61, scrappy bantam who helped lead the New York Yankees to four World Series championships in the 1950s as a hot-hitting and fielding second baseman and in 1977 as a tactically shrewd manager; of injuries suffered when his pickup truck, driven by a friend who was charged with drunken driving, skidded off an icy road; in Johnson City, N.Y. Notorious for his barroom brawls, Martin was fired as Yankee helmsman four times by team owner George Steinbrenner, and was forced to resign once after remarking about slugger Reggie Jackson and Steinbrenner, "One's a born liar, and the other's convicted"--a reference to the boss's guilty plea for illegal contributions to Richard Nixon's 1972 campaign.