Estoril vs. Boavista (Sunday, 3.30pm)
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Boavista will be attempting to continue their undefeated start to the Primeira Liga on Sunday when they travel to face Estoril Praia.
The hosts currently sit twelfth in the table after winning only one of their opening three matches, leaving them with some catching up to do on the rest of the teams above.
We say: Estoril Praia 1-2 Boavista
Estoril Praia have had a difficult start to the season, but have proven to be competitive in every single match they have played, which is likely going to be the case again this weekend.
However, Boavista could end up having slightly too much for them here, particularly due to the confidence that has come from their undefeated start.
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Chaves vs. Moreirense (Sunday, 3.30pm)
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Struggling Chaves will aim to avoid a fourth successive Primeira Liga defeat when they entertain Moreirense on Sunday afternoon.
The hosts suffered a 5-0 thrashing at the hands of SC Farense last weekend, while the visitors held Famalicao to a goalless draw in their previous match.
We say: Chaves 0-1 Moreirense
Given that Chaves have lost each of their opening three league games - conceding 11 goals in the process - we expect Moreirense to pile more pressure on the Primeira Liga basement dwellers this weekend.
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Porto vs. Arouca (Sunday, 6.00pm)
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Seeking to maintain their 100% start to the new league campaign, Porto play host to Arouca at the Estadio do Dragao in round four of the Primeira Liga on Sunday.
The Arouquenses head into the weekend on a run of six back-to-back defeats against the home side and will be looking to end this poor run.
We say: Porto 2-0 Arouca
Porto were pushed to the limit by Rio Ave on Monday and should expect another stern test against a well-drilled Arouca side. However, Conceicao's men boast the firepower needed to get the job done and we fancy them extending their winning streak against the Arouquenses.
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Braga vs. Sporting Lisbon (Sunday, 8.30pm)
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With the thrill from securing their spot in the Champions League still lingering in the air, Braga play host to Sporting Lisbon in round four of the Portuguese Primeira Liga on Sunday.
The Leoes journey to the Estadio Braga Municipal as one of just three sides with a 100% record in the new league campaign and will look to continue their perfect start to the season.
We say: Braga 1-2 Sporting Lisbon
Braga and Sporting Lisbon have both put together a fine run of form to start the season and we anticipate an end-to-end affair at the Estadio Braga Municipal. Amorim's side have won each of their last three Primeira Liga away games and we fancy them snatching all three points in this one.
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