Bayer Leverkusen defender Jeremie Frimpong celebrates scoring against West Ham during their Europa League quarter-final second leg. Leverkusen advanced to the semi-finals 3-1 on aggregate. AFP
Bayer Leverkusen defender Jeremie Frimpong celebrates scoring against West Ham during their Europa League quarter-final second leg. Leverkusen advanced to the semi-finals 3-1 on aggregate. AFP

Europa League: Leverkusen keep treble bid on course as Roma and Marseille also advance