Jack Sock and Lleyton Hewitt, two veterans of the Hall of Fame Tennis Championships here in Newport, RI, showed the meaning of sportsmanship last night during a Hopman Cup match in Perth, Australia.

Lleyton Hewitt was serving down 5-4 and 30-0 to Jack Sock in the second set. The umpire called Hewitt’s first serve out and he seemed ready for his second try before Sock stepped in to advise him about the errant call.

“That was in if you want to challenge it,” he said.

Check out the look on Hewitt’s face!

Lleyton Hewitt

The replay showed that Hewitt’s serve was in, and he ended up winning the match.

Check out the video!

Well done, Jack!

The 34-year-old Hewitt, a three time finalist in Newport (2012, 2013, 2014), won the Hall of Fame Tennis Championships in 2014 against Croation Ivo Karlovic in an epic three-set battle.  Hewitt, the former World #1, turned pro in 1998 and is retiring after the Australian Open later this month.