Rafa's sore wrist still under wraps

As Rafael Nadal stood near the net at the US Open after winning his first Grand Slam match in three months on Monday, he unraveled the thick wrap of white tape protecting his all-important left wrist and then clutched that arm with his right hand.

Sure, there were matches that provided more drama or surprises on Day 1 at Flushing Meadows, including 20th-seeded John Isner's comeback from two sets down to edge 18-year-old Frances Tiafoe before a rowdy, standing-room-only crowd at the new Grandstand.

And French Open champion Garbine Muguruza's complaints about having trouble breathing after dropping the first set of a match she went on to win in three.