Complex sentence: The first Superbike was won by John McGuinness followed by Alastair Seeley winning the first 600cc Supersport race First-time winners at the North West 200 included Paul Robinson in the 125cc race and Keith Amor in the 1000cc Superstock Race.
Split into simpler sentences: The first Superbike was won by John McGuinness and Alastair Seeley was a first-time winner at the North West 200 winning the first Supersport race. Other first-time winners included Paul Robinson in the 125cc race and Keith Amor in the 1000cc Superstock Race.