Palmeiras leads the Copa do Brasil 2026 market at 56% implied probability after securing a 1-0 first-leg semifinal win over Vasco da Gama, bolstered by squad depth, knockout experience, and a concurrent run to the Copa Libertadores final. Grêmio sits at 35.5% following its 2-0 home victory against Atlético Mineiro in the other semifinal, aided by early goals from Carlos Vinícius and Noriega plus home advantage in the return leg. Atlético Mineiro (19%) and Vasco da Gama (10.5%) trail due to the deficits they must overcome on the road, though home legs on November 7 and 8 introduce comeback potential in this two-legged format. The tight clustering among remaining contenders reflects the cup's inherent volatility, recent form swings, travel demands, and the single-match final scheduled for December 6 in Brasília, where any semifinal upset could reshape outcomes.