Troyes wasted the perfect opportunity to claim their first Ligue 1 win of the season after squandering a two-goal lead to lose 4-2 at home to Rennes.The hosts found themselves comfortably ahead inside the opening 15 minutes, with Fabien Camus smashing a wonderful effort into the top corner before Corentin Jean scored from close range.However, Rennes turned the game on its head as Fallou Diagne scored penalties either side of a Ousmane Dembele strike to send the visitors into the break ahead.Substitute Kamil Grosicki added extra gloss late on, escaping the hosts' defence and finishing from a tight angle.ends