Complex sentence: In August, Monfils entered the US Open seeded 10th and reached the semifinals without dropping a set, defeating prominent players Gilles Müller, Jan Šátral, Nicolás Almagro, Marcos Baghdatis, and Lucas Pouille in order en route.
Split into simpler sentences: In August, Monfils entered the US Open seeded 10th. He reached the semifinals without dropping a set, defeating prominent players Gilles Müller, Jan Šátral, Nicolás Almagro, Marcos Baghdatis, and Lucas Pouille in order en route.