These two clubs are great rivals and regularly finish in the top four of the Primeira League. Sporting Lisbon have won both of their league games this season and are fourth, a point and a place behind their opponents but with a game in hand. It's been a busy time for Sporting with Europa League qualifying games. They failed to make it to the group stages, losing out 4-1 at home to LASK, after previously beating Aberdeen. They have made a better start to the league season though with wins away at Ferreira and Portmonense. Both wins came by a 2-0 scoreline and now they start their home fixtures. Not that many goals are scored in their home games with six of the last seven league games seeing under 2.5 goals scored. In home league and cup games against Porto, all but two of the last six have had under 2.5 goals scored in them.
Porto are the defending league champions in Portugal but are only third at present. Their season got off to a great start with wins over Braga and Boavista with eight goals scored. Then they hosted Maritimo and their unbeaten league record was lost. Porto lost that game 3-2 but could have got a draw but for missing a second-half penalty. It was a game with late goals as Maritimo scored in the 94th and Porto in the 99th but still lost. Matches played between the top teams in the Primeira League are often tight affairs, go for under 2.5 goals in this match.
Sporting have made a 100% start to the new season with two away wins. Their opponents are the defending league champions who also started with two wins but then had a rare home loss going down 3-2 to Maritimo. That's bound to get their manager wanting to improve their defensive performances. Sporting are yet to concede a league goal this season and a tight affair looks likely. Go for under 2.5 goals to be scored.