#2 Porto missed Vincent Aboubakar
The centre-forward has been a key goal-getter for them this season. With 15 goals, it's safe to say that he is to Porto what Firmino is to Liverpool. However, it's not just his goals that were missed on the night.
Unlike Soares, who started in place of the Cameroonian, Vincent Aboubakar could have played the important role of holding up play. Before the game, a lot was made of Porto's quick wide players, but the injury to Aboubakar meant that Moussa Marega, a player more comfortable down the middle, was shifted to the right while Soares played up top.
Liverpool didn't have any problems dealing with a centre-forward who has only mustered three goals so far and is short on confidence, and a player who was played out of position.