NANTERRE, France (AP) — Turns out, those comparisons to Michael Phelps weren't far fetched at all when it comes to Léon Marchand. They certainly weren't a burden for the 22-year-old Frenchman.

None of Marchand’s predecessors, though, did so representing the host nation. The 22-year-old Marchand, born in Toulouse, France, has become a national hero in the span of six days. His four gold ...