Barcelona need to learn from their LaLiga defeat by Atletico Madrid this season and be more clinical in front of goal when they meet again in their Copa del Rey semi-final first leg, manager Hansi Flick said on Monday. Atletico claimed their first away win at Barca in 18 years with a 2-1 victory in December despite the hosts dominating the opening exchanges and scoring the first goal. "This is a new game. We have to prove it," Flick told reporters ahead of Tuesday's home clash. "Atleti are a