Complex sentence: Ryan Sweeting was the defending champion but lost to John Isner in the quarterfinals who lost in the final to Juan Mónaco 2--6,6--3,3--6.
Split into simpler sentences: Ryan Sweeting was the defending champion but lost to John Isner in the quarterfinals. Isner lost in the final to Juan Mónaco, 2--6,6--3,3--6.