Zenit St Petersburg can take a big step towards the next round of the Champions League on Wednesday when they play host to Porto in Group G.
The Russians are currently in second place in the table, one point above Porto and five points behind leaders Atletico Madrid.
However, victory for Porto would see the Portuguese champions put themselves back in contention to qualify for the last 16.
Zenit earned a late 1-0 win when the teams met at the Estadio do Dragao two weeks ago.
Axel Witsel misses the match through suspension for the home side, while the visitors are without the banned Hector Herrera.
Recent form
Zenit: WWWWLD
Porto: LWWLWD
Possible starting lineups
Zenit: Lodygin; Smolnikov, Neto, Lombaerts, Criscito; Faizulin, Shirokov, Shatov; Arshavin, Danny; Hulk
Porto: Helton; Otamendi, Mangala, Danilo, Sandro; Gonzalez, Fernando, Ghilas, Varela; Martinez, Pereira
Sports Mole says: 2-2
Jack Prescott
