Jack Sock to join John Isner in retirement after U.S. Open
(Photo credit: Taya Gray/The Desert Sun / USA TODAY NETWORK)
Four-time singles champion and former World No. 8 Jack Sock announced Sunday that he will retire after the U.S. Open.
It is the second major retirement tied to the U.S Open to be announced in the last week, as John Isner announced his impending retirement on Wednesday.
Currently ranked 485th in the world, the 30-year-old Sock will compete alongside Isner in do