LONDON (AP) ― Roman Shirokov scored a hat trick Tuesday to put Zenit St. Petersburg on the brink of the Champions League group stage.

Shirokov’s treble came as Zenit easily overcame Pacos Ferreira 4-1 in their first leg.

Tuesday’s other matches saw teams claim two-goal advantages going into next week’s second legs.

Kazakhstan champion Shakhter Karagandy stunned Scottish club Celtic 2-0, Real Sociedad won at Lyon by the same score and Viktoria Plzen beat Maribor 3-1 in the Czech Republic.

A further 10 clubs are in action Wednesday as they chase a spot in the lucrative 32-team group stage, which starts in September.