Alassane Plea's solitary strike was enough to send Nice top of Ligue 1 following a 1-0 win at AS Nancy.Plea fired home from inside the penalty area in the second half to clinch his side a fifth win from their first seven league matches and Lucien Favre's side now hold a one-point advantage over Monaco.Defeat leaves Nancy without a home league win this season and they remain second from bottom in the table.Nancy made all the early running and carved out numerous first-half chances, but the visitors improved after the break and Plea struck his fourth goal of the season in the 60th minute when drilling home a low shot following Valentin Eysseric's pass.