Whether Vitória and Flamengo combine for more than 2.5, 3.5, or 4.5 goals will determine the over/under payouts.
Also at stake is whether both teams score, which affects same-game parlay combinations and bettors' risk exposure.
CR Flamengo and EC Vitória are the primary actors, with starters, substitutes, and coaching choices shaping scoring chances.
Strikers and fullbacks who push forward, plus the two goalkeepers and any suspended players, will swing the totals and the both-teams-to-score outcome.
Starting lineups, formation (attack-minded or defensive), and availability of key attackers directly change expected goal totals.
In-game events—early goals, red cards, tactical switches, weather, and pitch condition—can quickly move the match from a low to high-scoring contest.
Lineups released about an hour before kickoff reveal whether top attackers play and whether coaches field offensive systems.
Also monitor injury reports, pre-match weather, live in-play odds, and the first 20 minutes for early goals or cards that foreshadow scoring patterns.