In contrast to the opening day, day two of the tournament produced four victories and no drawn games.
While not among the red-hot favourites to win the tournament, Mexico were certainly expected to account for Mali without too many problems.
Under the roof in Dunedin, they exerted significant first-half pressure with Hirving Lozano a constant threat and only some goalkeeping heroics keeping the Mexicans scoreless.
When Mali had a man sent off ten minutes after half-time, it appeared the dam would burst, but Mexico were themselves reduced to first ten and then nine men in quick succession. The second of the dismissals was questionable with the second yellow shown to Oscar Bernal very soft.
Mali sniffed their chance and took the lead after some ponderous set-piece marking to open the scoring. The impressive Dieudonne Gbakle then played a sumptuous one-two on the edge of the penalty area and supplied an assured finish to give his side a famous victory.