Spurs are far from contending, but Victor Wembanyama’s defense is on a rapid ascent

PHILADELPHIA — A few weeks ago, Joel Embiid said he wondered if Victor Wembanyama knew what he wanted. “I think, first of all, he has to figure out where he wants to play, whether he wants to be a guard or a big or whatever,” the 76ers big man said. “It’s not necessarily whether he …