Softball: Black Sox suffer shock loss to Mexico at world championships

The world champion Black Sox have slumped to a shock 5-4 extra-innings defeat against Mexico at the world men's softball championships in Prague.

New Zealand went into the seventh inning with a 4-1 lead, but conceded three runs to send the match into extra innings.

Antonio Gonzalez then became the hero for ninth-ranked Mexicans, with his hit in the bottom of the eighth inning scoring Alan Salgado for victory.

The win inspired Mexican players and coaching staff to run out onto the diamond to celebrate.

The loss was the Black Sox's first of the tournament, after beating Czech Republic 9-0 in their tournament opener and Cuba 2-0 on Sunday.

The win was Mexico's first, after losing to Japan and hosts Czech Republic in their first two matches.

The Black Sox play Botswana at 11:30pm Monday (NZT).