Sixth-seeded American Tim Smyczek came from behind to defeat Lincoln’s Jack Sock 2-6, 7-6 (7-1), 7-5 in the finals of the $50,000 JSM Champaign Challenger tennis tournament Saturday at the University of Illinois.

The seventh-seeded Sock appeared to be in control up a set and a service break at 2-0 in the second set, but Smyczek, ranked No. 152 in the world, battled back to pull even and eventually win the second set in a tiebreaker. The players held serve throughout the third set until Smyczek broke Sock in the final game of the match.

The 20-year-old Sock, ranked No. 165, picked up 48 ATP points by reaching the finals of the last Challenger tournament in 2012. That should move Sock to approximately No. 150 in next week’s rankings.

Reach Ron Powell at 402-473-7437 or