French -trained Treve wins Prix de l'Arc de Triomphe . first horse in three-year-old to win back to back Arcs . three -1 shot Arcs given perfect ride by jockey Andre Fabre 's . Japanese challenge never materializes .
French-trained Treve wins Prix de l'Arc de Triomphe . First horse in 40 years to win back to back Arcs . 11-1 shot Treve given perfect ride by jockey Thierry Jarnet . Japanese challenge never materializes .