Complex sentence: After several anxious laps, Fernandez pits and puts Rice back into the lead ahead of second place Kanaan and third place Wheldon, which remains the running order a severe thunderstorm finally falls to bring a halt to proceedings at lap 180,450 miles.
Split into simpler sentences: After several anxious laps, Fernandez pitted and put Rice back into the lead ahead of second place Kanaan and third place Wheldon, which remained the running order. A severe thunderstorm finally fell to bring a halt to proceedings at lap 180,450 miles.