Barcelona's Luis Suarez netted twice for a 2-1 win over 10-man Atletico Madrid in their Champions League quarterfinal first leg Tuesday after the visitor's Fernando Torres opened the scoring and was later sent off. After a flurry of chances for the home side, Suarez leveled from close range in the 63rd minute and then headed the winner in the 74th, giving the European champion the edge before next week's second leg at the Vicente Calderon. Bayern Munich took a slender lead into the second leg of the quarterfinal against Benfica after Arturo Vidal's early goal earned a 1-0 win over the resolute Portuguese in Munich. Atletico got off to an ideal start when Torres fired Koke's pass through the legs of keeper Marc-Andre ter Stegen after 25 minutes but 10 minutes later he was dismissed for a second booking as they suffered a seventh straight loss to Barca. Atletico had been in confident mood after thrashing Real Betis 5-1 in la Liga Saturday and was looking to take advantage of Barcelona, which was reeling from a 2-1 home defeat by Real Madrid that ended its record 39-game unbeaten run. Diego Simeone's men defended as a team and their organized play and high pressing interrupted Barca's usual quick passing game. "We are still alive in the tie," Atletico coach Simeone said. "They had a chance to score another goal with an extra man and they didn't, so that gives us hope and belief. The second leg is going to be a great game." After Lionel Messi and Neymar missed the target in the early stages, Atletico pounced with their first proper chance. After a long spell of possession, Koke received a pass from Gabi and took a touch before threading the ball into the path of Torres, who got his 11th goal in 15 matches against Barcelona. The former Liverpool and Chelsea striker received his first booking for a late tackle on Neymar in the middle of the pitch four minutes after scoring and got his marching orders for a second yellow minutes later for fouling Sergio Busquets. Simeone's side had two sent off when they lost to the Catalans in La Liga and was again punished for indiscipline. Benfica, aiming to reach the semifinals for the first time since 1990, has conceded 13 goals in its three previous visits to Bayern and must have feared the worst when Vidal headed home after two minutes. But the floodgates failed to open after that as the visiting defense stood firm on a frustrating evening for the host which beat Benfica's archrival Porto 6-1 at home at the same stage of the competition last season. Five-time European champion Bayern had also found goals easy to come by in the Champions League this season, blasting 18 in its previous four home matches, but came up against some dogged defending as it pushed to extend its advantage. Bayern striker Robert Lewandowski had a superb chance to add a second in the dying stages but bizarrely opted to try and pass to Philipp Lahm when through on goal and it was wasted. "We only had a few good chances," said Bayern goalkeeper Manuel Neuer. "Benfica's defence did a good job, their four-man backline works pretty well. In the end we missed the chance to score a second goal but sometimes a 1-0 has to be enough."