Delgado got his 31st goal in 70 appearances on a play that followed a throw-in, collecting a pass from Edison Mendez with his chest, bursting between Marin and Michael Umana, then beating Porras to the near post. Kaviedes' goal was his 14th in 46 games for Ecuador.

Costa Rica's best chance to get back in the game came in the 42nd minute, when Sequeira tried to bounce a header in and missed wide. A minute earlier, Porras had to lean back to parry a deflected cross. Alvaro Saboria hit the underside of the crossbar in the 88th, only to have the ball bounce out.

"We have played three World Cups and, yes, this has been our worst," said forward Paulo Wanchope, who plans to retire from the Ticos after the tournament.

Kaviedes, who replaced Tenorio at the start of the second half, scored in the second minute of injury time from 6 yards off a cross from Mendez, getting by Marin and sliding to poke the ball in.

"We made history and that's what we came here to do," Ecuador coach Luis Suarez said. "We achieved our first goal, but it won't be the only one."