Dynamo Moscow reaped the benefit of the Champions League qualifiers coming midway through its season when it beat a rusty-looking Celtic 1-0 in Glasgow in the first leg of their third round tie on Wednesday. The match was Celtic's first competitive outing while Dynamo has played 15 league games so far and the difference was evident throughout. The Russians looked more lively from the start and scored their goal after seven minutes when Alexander Kokorin reacted quickly to turn in a low cross from close range. Dynamo remained the livlier team and though Celtic striker Marc-Antoine Fortune had several good chances to level, the hosts, playing their first competitive game under new coach Tony Mowbray, looked disjointed and will need to find some quick improvement if they are to turn things round and get through to the playoffs for a place in the group phase. Olympiakos Piraeus looks to have avoided a repeat of last year's early exit when it secured a 2-0 lead from the away leg at Slovan Bratislava. Last season Olympiakos lost 3-1 on aggregate to Cypriot outsiders Anorthosis Famagusta at the same stage and missed out on the Champions League group phase for the first time in 12 years. Sporting, which reached the knockout stage last season only to be humiliated 12-1 on aggregate by Bayern Munich, was held to a goalless draw in Lisbon by 10-man Twente Enschede. UEFA Cup holder Shakhtar Donetsk twice came from behind to draw 2-2 at home to FC Timisoara. Apoel Nicosia beat visiting Partizan Belgrade 2-0. Two goals for Marcos and one for Zoran Pavlovic gave Maribor a 3-2 win at FC Zurich while Cesar Santin also got two, one a penalty, after Jesper Gronkjaer's opener in FC Copenhagen's 3-1 home win over Stabaek. Debrecen claimed a 1-0 success at Levadia Tallinn. Utd beats Boca Juniors In Munich, New signing Antonio Valencia scored the winner for Manchester United in a 2-1 victory over Boca Juniors in a star-studded friendly tournament on Wednesday. In the second game of the Audi Cup, Thomas Mueller scored twice to help Bayern Munich beat AC Milan 4-1. Midfielder Anderson gave Manchester United the lead with a curling free kick. Valencia, newly signed from Wigan, sealed the victory before halftime with a low shot that went in under goalkeeper Roberto Abbondanzieri. Federico Insua pulled one back for the Argentine club in the 55th.