FC Porto are struggling badly right now. They have lost four of their last five matches, including three in a row, and look completely out of form. On the other hand, Rio Ave are doing much better—they have not lost any of their last four games, with a win and three draws. They seem solid and hard to beat at the moment.

When these two teams have met before, the matches have often been close and not very high-scoring. Several of their recent meetings ended 1-0 or 0-0, which suggests goals may be hard to come by again. Given Porto's poor recent form and Rio Ave's strong run, this looks like an open contest where Rio Ave could get a result. I think Rio Ave will win this game.