SCOTTSDALE, Ariz., March 7 (UPI) -- Anthony Rizzo doubled home two runs on a misplayed fly ball in the ninth inning Thursday to give Italy a 6-5 win over Mexico in the World Baseball Classic.

The Italians won the opening game of the Pool D round-robin portion of the tournament. The United States and Canada will also take part in Pool D with the top two teams advancing to the next round.

Italy faced a 5-4 deficit heading into the ninth, but put runners on first and second with one away against closer Sergio Romo.

Rizzo then hit a fly ball to left that popped out of the glove of Edgar Gonzalez. It was ruled a double and both runners scored.

Mexico then loaded the bases with two out in the bottom of the ninth, but Jason Grilli got Jorge Cantu on a grounder to second to end the game.

Nick Pugliese was credited with the win after pitching 1 1/3 innings of hitless ball.

Italy will return to action Friday with a day game against Canada and Mexico will take on the United States during the evening in what will be the Americans first competition in the event.