Sports Mookie Betts signs mammoth 12-year extension with Dodgers July 22, 2020July 22, 2020Bob Nightengale, USA TODAYComments Off on Mookie Betts signs mammoth 12-year extension with Dodgers The Dodgers have signed All-Star outfielder Mookie Betts to the richest contract in franchise history that could reach nearly $400M.