John Isner says he played his best tennis of the season at the Paris Masters this past week.
The American reached the final before falling in three sets to new world No. 1 Andy Murray.
The run has put Isner back in the Top 20—he’s No. 19—and he’ll finish the season as the top-ranked American. World No. 23 Jack Sock, who was previously the top-ranked American, was defeated in the quarterfinals in Paris.