BOSTON — Stephen Curry scored 43 points to lead the Golden State Warriors to a 107-97 victory over the Boston Celtics in Game 4 of the NBA Finals on Friday night, sending the series back to San Francisco knotted at two games apiece. Curry added 10 rebounds and made a pair of baskets during a 10-0 fourth-quarter run that turned a four-point Boston edge into a 100-94 Golden State lead.