Jayson Tatum scored 33 points and grabbed 11 rebounds, Jaylen Brown added 17 points and the Boston Celtics staved off elimination in the Eastern Conference finals by running away in the second half to beat the Miami Heat 116-99 in Game 4 on Tuesday night. Derrick White had 16 points, Grant Williams scored 14, Al Horford added 12 and Marcus Smart scored 11 for the Celtics, who still trail the series 3-1 — but sent it back to Boston for a Game 5 on Thursday. Jimmy Butler scored 29 for Miami, which led by nine in the second half before getting outscored 48-22 in a 14-minute stretch that turned the game and perhaps the series completely aroun