Bayer Leverkusen’s pursuit of a treble was hugely boosted by a 2-0 win at Roma in their Europa League semi-final first leg on Thursday, while Marseille and Atalanta drew 1-1. Leverkusen’s Germany duo Florian Wirtz and Robert Andrich scored either side of the break to help the recently crowned Bundesliga champions extend their remarkable unbeaten run this season to 47 games in all competitions – a record in the big five leagues. “We knew it was going to be a fiery game given the stadium and the result last year,” Andrich, whose side lost to Roma at the same stage last term, told RTL. “I had a b…