Struggling Metz stopped a three-game losing streak in Ligue 1 as Mustapha Diallo's injury-time own-goal earned them a 2-2 draw with Guingamp.Metz, who have only won once since the end of September, started brightly and took the lead in the 12th minute through Opa Nguette.However, Guingamp turned things around thanks to Jimmy Briand's second-half double, coming in the 49th and 74th minutes.Metz piled the pressure on and were rewarded in the first minute of injury time when Guingamp's Diallo put through his own net.ends