Major League Baseball just announced the most popular jerseys sold and Mariano Rivera is at the top of the list: 1. Mariano Rivera, New York Yankees 2. Matt Harvey, New York Mets 3. Yasiel Puig, Los Angeles Dodgers 4. Manny Machado, Baltimore Orioles 5. Buster Posey, San Francisco Giants 6. Clayton Kershaw, Los Angeles Dodgers 7. Yadier Molina, St. Louis Cardinals 8. Andrew McCutchen,...