Former European champions Porto start this season's Champions League with a trip to Austria Vienna on Wednesday in Group G.
The Portuguese champions have won their first four matches in the league, a run that has taken them two points clear of Sporting Lisbon in the table.
Vienna, who beat Dinamo Zagreb in the final round of qualifying, have had a rocky start to their title defence thanks to three draws and two defeats from eight games.
The sides met in the competition back in 2002 when Porto earned a 3-0 aggregate victory in the second round.
Recent form
Vienna: WWWLDL
Porto: WWWWWW
Possible starting lineups
Vienna: Lindner; Ortlechner, Suttner, Koch, Rogulj; Mader, Holland, Royer, Syankovic; Jun, Hosiner
Porto: Helton; Otamendi, Danilo, Sandro, Maicon; Defour, Lica, Fernando, Quintero; Varela, Martinez
Sports Mole says: 1-3
