Riera scored in the 122nd minute to knock out Wellington Phoenix from the Round of 32 in heartbreaking fashion. 

The Spaniard popped up with a header to ensure the game did not need a penalty shoot-out, to the relief of the Wanderers fans at Campbelltown Stadium.

And now Riera is hoping he can continue his form for the rest of the FFA Cup and heading into the A-League season. 

“I'm very happy to start with a goal in my first game,” Riera told Fox Sports.

“I scored in the last friendly game, so it's a very good start.

“But I want to score more goals and win more games."

It was a scrappy affair in Sydney's west, but Riera believed the Wanderers would get the job done. 

“We hoped, we hoped," he said. "But we need to improve a lot with the ball and without the ball.

“It's a long pre-season, so we have time to [get] fit and improve a lot of things.

“It's only the first game, but we need more."