NEW YORK - Zack Greinke and the Los Angeles Dodgers have knocked Alex Rodriguez and the New York Yankees off baseball's payroll perch, part of an offseason spending spree that has the average salary approaching $4 million for the first time.The Dodgers are ending the Yankees' 15-year streak as baseball's biggest spenders and as of Tuesday had a projected payroll of $235 million, according to study of all major league contracts by The Associated Press.