The recent form contrast is the first clue. Start with the matchup record; my selection is Over 2.25 goals at 2.02. The ten separate recent team games averaged 2.7 total goals; the current 2.25 line sits below that descriptive average, which is context rather than a match forecast. Those results show 5 goals scored and 8 conceded for Goias Esporte Clube, compared with 6 scored and 8 conceded for Athletic Club.
The recorded scorelines for Goias Esporte Clube, newest first, are 0-3, 0-1, 2-1, 3-1, 0-2; for Athletic Club they are 1-2, 2-2, 1-1, 2-0, 0-3. At decimal odds 2.02, the break-even threshold is about 49.5% before market margin; that number is a price hurdle, not a predicted win probability. The two short form lines frame the matchup, though they do not establish a tactical fact on their own. Form alone cannot tell us how the sides will set up. I will keep that tactical uncertainty explicit and recheck the market.