BOSTON — Stephen Curry was demoralizing the Celtics when he decided to improvise. After he dribbled to spin past Marcus Smart, who happens to be one of the N.B.A.’s most ferocious defenders, Curry found himself sizing up Robert Williams, a 6-foot-9 center whose sneakers might as well have been filled with concrete.
Curry took a hard dribble, leaving Williams in his wake, before he rose from the court to sink a running 12-foot floater that extended Golden State’s lead in Game 4 of the N.B.A. finals Friday night.
It was a scene that felt familiar but new, the same but somehow different.