Jayson Tatum scored 51 points – the most in a Game 7 in NBA history — and the Boston Celtics beat the Philadelphia 76ers 112-88 on Sunday to advance to the Eastern Conference finals for the second straight year. One game after missing 14 of his first 15 shots only to awaken in the fourth quarter, Tatum got off to the fast start the Celtics needed. The Celtics, who lost to the Golden State Warriors in the NBA Finals last year, will face the Miami Heat in the Eastern Conference finals, which begin on Wednesday in Boston.