Complex sentence: Countering this was Mansell's impressive 12th-to-first race, even overtaking Senna in the area he excelled most, lapping back markers-an impressive move on a track notorious for mediocre and unpassable races.
Split into simpler sentences: Countering this was Mansell's impressive 12th-to-first race, even over taking Ayrton Senna in the area he excelled most, lapping back markers. Mansell made an impressive move on a track notorious for mediocre and unpassable races.