Lleyton Hewitt beats Peter Polansky in 3 sets in Houston

Peter Polansky of Canada returns a shot to Lleyton Hewitt on Tuesday, April 8, 2014 at the U.S. Men's Clay Court Championship at River Oaks in Houston, Texas. Hewitt won 6-4, 3-6, 6-4. (AP Photo/The Houston Chronicle, Thomas B. Shea) (The Associated Press)

Lleyton Hewitt, of Australia, returns a shot to Peter Polansky, of Canada, at the U.S. Men's Clay Court Championship tennis tournament, Tuesday, April 8, 2014, in Houston. Hewitt won 6-4, 3-6, 6-4. (AP Photo/Houston Chronicle, Thomas B. Shea) MANDATORY CREDIT (The Associated Press)

Former world No. 1 Lleyton Hewitt beat Canada's Peter Polansky 6-4, 3-6, 6-4 in gusty conditions Tuesday to advance to the second round of the U.S. Men's Clay Court Championship.

Also advancing were Americans Donald Young and Michael Russell. Young routed countryman Ryan Harrison 6-0, 6-1, and Houston-based Russell eliminated Spain's Daniel Gimeno-Traver 6-3, 7-6 (2). Harrison was plagued by a back injury that later forced him to pull out of the doubles.

Top-seeded John Isner, ranked a career-high ninth, begins his title defense Wednesday night against Germany's Dustin Brown.