Original sentence: However, Berdych defeated Andy Roddick in the second round-robin match, 7–5, 6–3.In his opening round-robin match he lost to Novak Djokovic, 3–6, 3–6
Edited sentence: His lack of confidence showed in his opening round-robin loss to Novak Djokovic, 3–6, 3–6.However, as a surprise to many, Berdych somehow defeated Andy Roddick in the second round-robin match, 7–5, 6–3