In the match between America Mineiro and Operario Ferroviario in the Brazilian Serie B, a tense battle is expected. Both teams are occupying the top positions in the league table, with 22 points each after 13 games. America Mineiro has shown some instability, failing to win in their last three matches, while Operario Ferroviario has been showcasing a solid defense and is currently on a three-game winning streak. Given the strengths of both teams, a tough battle is expected, but Operario Ferroviario may use their strong defense to protect their goal and come out successful in this match. Therefore, my prediction is a win for Operario Ferroviario or a draw.