Margalita Chakhnashvili reacts to a line call in the third set of her match against Carly Gullickson during the finals of singles competition at the AT&amp;T $25,000 Challenger USTA Pro Women's Tennis Circuit Tournament played on March 30, 2008 at Oak Knoll Country Club in Hammond, LA. Gullickson defeated Margalita in three sets 6-4, 4-6, 6-4 to win the AT&amp;T 25K Challenger...