Porto downs Arsenal 2-0 in Champions LeagueBy foxsportsPublishedDec. 10, 2008 10:02 p.m. ETBruno Alves and Lisandro Lopez scored a goal in each half Wednesday to lead FC Porto over Arsenal 2-0 in the Champions League.Alves headed in from a corner in the 39th, and Lopez struck a powerful shot past goalkeeper Manuel Alumnia in the 54th.