PARIS — For a few, fleeting moments Sunday, Rafael Nadal found his French Open supremacy seemingly threatened by Dominic Thiem, a younger, talented opponent challenging him in the final for the second consecutive year.
A poor game from Nadal allowed Thiem to break him and even things at a set apiece. That development brought fans to their feet in Court Philippe Chatrier, roaring and clapping and, above all, wondering: Was this, now, a real contest? Could Thiem push Nadal more? Could he make this surge last? Would Nadal falter?
That the questions were raised at all was significant.