By McCarton Ackerman, USTA.com
Putting a capstone on a milestone season in both singles and doubles, Jack Sock became the top-ranked American man on Monday for the first time in his career, overtaking Steve Johnson.
Sock leads Americans this week at No. 23 in the Emirates ATP Rankings, just one spot above Johnson at No. 24. Longtime top American man John Isner checks in at No. 27 and Sam Querrey is No. 29.
Johnson had taken over the U.S. No. 1 ranking from Isner in August, snapping Isner's three-year hold on the top spot.
"I think, as everyone knows, I love everything about this country and playing for them," said Sock during this year's US Open.
The 24-year-old has reached two ATP World Tour singles finals this year, finishing runner-up in January in Auckland and then repeating the feat in April in Houston. He also defeated former US Open champion Marin Cilic last month to make his first fourth-round appearance at the US Open.And last week, he scored his third Top 10 win of 2016 over current world No. 4 Milos Raonic to reach the quarterfinals in Shanghai.
Also in Shanghai, Sock paired with Isner to win the doubles title, another in a long line of doubles successes. The Nebraska native made headlines this summer by winning gold in mixed doubles with Bethanie Mattek-Sands in mixed doubles and the bronze medal in men's doubles with Johnson at the Rio Olympics.
Sock also reached the doubles final at three other ATP World Tour events this year, finisher runner-up in Beijing with Bernard Tomic, and in Indian Wells and Rome with Vasek Pospisil.
Sock is the No. 6 seed at this week's ATP World Tour event in Stockholm. He plays Malek Jaziri in the first round.