Chang W. Lee/The New York Times
For a tennis champion devoted to his routines, Rafael Nadal has certainly managed to navigate plenty of change.
Signs of the times were everywhere as he prevailed in a draining and dazzling United States Open final over Daniil Medvedev on Sunday night.
When Nadal won his first United States Open in 2010, there was no retractable roof high over his head, no digital serve clock counting down in a corner of Arthur Ashe Stadium and causing him grief.
Even the rival looming across the net on Sunday was a break with tradition.