MEXICO CITY - Argentine striker Bruno Marioni scored a hat-trick to give Tecos UAG a 3-0 win over Pumas UNAM, handing the Mexican Apertura champions their fifth defeat in five league matches. Pumas remain rooted to the bottom of Group Three with no points after Friday night's match. They have scored only one goal and conceded 12. Marioni tapped in his first after 17 minutes before converting a penalty in the 32nd after Efrain Velarde handled. He completed the scoring by driving the ball home left-footed in the 57th. "A night like this you remember always," Marioni told reporters. Pumas's Brazilian coach Ricardo Ferretti said: "It's the same pain, the same inability to react in difficult moments. As long as we don't improve we'll carry on with our backs to the wall." It was the first match in the Mexican top flight where the referee used a vanishing spray to mark a line on the pitch to ensure defensive walls kept a minimum 9.15 metres from the ball at free kicks. The Mexican Football Federation announced in the week that the white spray, called "AeroComex Futline" and carried in an aerosol can, was to be used.