The Top Seeds are in action today in the USTA Challenger Series at Tunica National.
Number-3 Seed American John Isner Knocks off Serbian Vladimir Obradovic in straight sets..
The scores 7-6, 64.
Isner, who stands 6'9", played in the ATP Regions-Morgan Keegan Championships in Memphis back in February...
Doing well in the Challenger Series could get him on the ATP Tour Full Time.
Top Seed Donald Young gets by his first match in the USTA Challenger series down at Tunica National..outlasting Cecil Mamitt of the Phillipines in 3-sets..
4-6, 6-2, 6-3.
The $50-thousand Dollar Tournament runs through Saturday at Tunica National Golf and Tennis Resort.