Castanhal opened their Paraense campaign with a 1-0 victory over Paragominas at the Estádio Maximino Porpino Filho, a result that defied the statistical probabilities offered by the competition's underlying data. The Lemeister model had installed Paragominas as marginal favourites entering the match, projecting a 40 per cent win probability for the visitors against Castanhal's 28 per cent, with the draw at 32 per cent. Yet the home side managed to secure the points through a single decisive moment in the second half, a script that the model, which projected a 1-0 away win, did not foresee.
The match remained goalless for the first 71 minutes, a period during which the absence of recorded statistics such as possession, shots, and expected goals makes it difficult to assess the balance of play with precision. However, the fact that neither side had found the net by that stage suggests a contest of limited clear-cut chances, with both defences largely on top. The breakthrough arrived in the 72nd minute when Samuel found the net for Castanhal, converting a chance that proved sufficient to decide the fixture. The goal was not recorded as a penalty or own goal, indicating it came from open or set-play action, though no assister was listed in the data.
Paragominas' hopes of a response were dealt a damaging blow just five minutes later. In the 77th minute, Mateus was shown a yellow card, and moments later received a second booking to be dismissed, leaving the visitors to play the final 13 minutes plus stoppage time with ten men. The red card effectively extinguished any realistic prospect of an equaliser, as Castanhal managed the closing stages without recorded further incident to secure the win. The indiscipline of Mateus proved costly, as Paragominas had been the side with the higher projected chance of scoring according to the model.
The absence of broader match statistics from the data restricts a fuller analysis of the balance of play, but the result itself tells the essential story. Castanhal, the home side and underdogs by the model's measure, capitalised on their one clear chance and were aided by the indiscipline of their opponents. Paragominas, despite being projected to score once, could not find a way past the Castanhal defence in the time available. The lack of shots or expected goals data means it is impossible to determine whether the visitors created chances of their own or were stifled by the home side's organisation.
The dismissal of Mateus was the pivotal disciplinary moment. A yellow card for the Paragominas player was followed almost immediately by a second, turning what might have been a push for an equaliser into a defensive rearguard action. The visitors held out without conceding a second goal, but the numerical disadvantage rendered their attacking threat negligible in the final quarter of the match. With no substitutions recorded for either side, the same 11 players for Paragominas had to adapt to playing a man down, which likely further hampered their ability to sustain pressure.
For Castanhal, the win provides a positive start to their 1st Phase Group 1 campaign. Collecting three points at home against a side that began the round as favourites gives them early momentum in the competition, a valuable boost in a group stage where every result carries weight. Paragominas, despite their pre-match billing, leave empty-handed and will assess a performance that failed to translate their theoretical advantage into tangible reward, made worse by the need to manage Mateus's suspension for the next fixture. The model's projection of a draw as the most likely outcome at 32 per cent proved inaccurate, with a single goal and a red card rewriting the script. The result underscores how quickly the intended narrative can shift in regional competitions, where fine margins and moments of indiscipline often decide outcomes.
