Right from the start, Rafael Nadal was running on empty.
Nadal showed the effects of his long layoff from a wrist injury Thursday, losing to Croatia's Borna Coric 6-1, 6-3 at the Western & Southern Open. The 30-year-old Spaniard has a lot of work to do before the U.S. Open.
He was sluggish and well off the mark on his shots Thursday and had a trainer visit between games to check his shoulder and elbow, which were feeling the effects of a lot of tennis at the Olympics in Rio de Janeiro and two days in Cincinnati's heat and humidity.
"Too tired," he said. "Elbow, shoulder. Two and a half months without competing and especially without practicing,...