Complex sentence: After leading two laps, he was passed by Elliott Sadler, who led only one lap, before leaving the first position to Marcos Ambrose on lap 120, but one lap later, Menard passed Ambrose for the lead position.
Split into simpler sentences: After leading two laps, he was passed by Elliott Sadler, who led only one lap, before conceding the first position to Marcos Ambrose on lap 120. One lap later, Menard passed Ambrose for the lead position.