“You need to understand that it is more difficult to defend in a system with two forwards.
Therefore, the choice today fell on the scheme with one striker.
We needed more voluminous players "- quotes Semak" Championship ".
Romelu Lukaku scored the winning goal in the 69th minute of the match.
Group H game Chelsea - Zenit took place in London at Stamford Bridge stadium.
In the next match Zenit will host Malmö (Sweden) on 29 September.
Earlier, Semak said why he did not replace Azmun in the match against Chelsea.