Rhyan Grant accepted Sydney FC were "a little bit lucky" after his unorthodox extra-time goal secured victory over Melbourne City in the A-League Grand Final.

The full-back raced onto Luke Brattan's fine pass and chested the ball beyond goalkeeper Tom Glover after 20 minutes of extra time had been played.

The goal sealed a 1-0 win for Sydney, who became A-League champions for a record fifth time and backed up their Premiers' Plate win from the regular season.

The Sky Blues had ridden their luck earlier in the contest, though, Harrison Delbridge having had a goal disallowed for offside by VAR and Craig Noone seeing an effort cleared from in front of the posts.

Reflecting on his winner, Grant told Fox Sports: "It was nice, I was maybe a little bit lucky with it but I thought I'd maybe put the keeper off with the chest rather than the head and it worked, so happy days.

"We didn't start great, we were a bit shaky, we couldn't get the ball on the deck and play football. Credit to City, they started really well and came at us in that first half. Going into the break, we sort of took that as a restart.

"The second half, we were a little bit better - again, probably not at our best - and it was a bit end to end at times, a bit cagey, so we had to ride that out and make sure when we got our chances, we took them.

"City were very good, but we got a little bit lucky, I reckon."

Coach Steve Corica was full of praise for Grant, who won the Joe Marston medal as the best player in the final.

"You could see when he was out a couple of games that we really missed him and he's come back at the right time," Corica said. "He's been sensational all year; he's the best right-back in the country, of course."

Sydney became the first time since Brisbane Roar eight years ago to win back-to-back titles, having also been crowned premiers for the third time in four seasons.

"It's not easy to go back to back," said Corica. "We said before the start that only one team has done that before in the history of the A-League. It really means a lot to this time.

"We set our sights at the start of the year to win the Premiership and to do the double, and full credit to these boys and all the staff - they were sensational throughout the year."

Sydney FC became A-League champions for a record fifth time on Sunday with a 1-0 victory over Melbourne City after extra time in the Grand Final.

Rhyan Grant's improvised finish in the 100th minute of the match at Bankwest Stadium secured back-to-back championships for the Sky Blues and ensured City's first Grand Final ended in disappointment.

Steve Corica's side are the first to win five titles in the competition's history and the first since Brisbane Roar eight years ago to claim back-to-back triumphs.

City thought they had the lead 17 minutes in when Harrison Delbridge drilled in a shot from the edge of the area, but the goal was disallowed after a VAR check penalised Lachlan Wales for standing in front of goalkeeper Andrew Redmayne while offside.

City had the better of the first half-hour and Craig Noone beat Redmayne with a scuffed effort near the left-hand post only for the covering Ryan McGowan to hook the ball clear.

At the other end, Adam Le Fondre felt he should have had a penalty after going to ground under contact from Curtis Good, but referee Chris Beath was unmoved.

Milos Ninkovic had a quiet first half but played a key part in a fine move that saw Le Fondre come close in the second, and he should have broken the deadlock moments later only for Joshua Brillante to stand tall and block his close-range effort.

Redmayne denied Noone from inside the box and scrambled to gather a Scott Galloway strike, before Tom Glover made a crucial block with his leg to deny Sydney a fortuitous winner at the end of normal time.

Luke Brattan provided the telling moment of quality, his fine pass picking out Grant's run into the box, and the full-back used his chest to divert the ball beyond Glover and into the bottom-right corner.

Rhyan Grant's first A-League goal in over two years gave Sydney FC a narrow 2-1 victory over an unlucky Wellington Phoenix, who had Liberato Cacace sent off.

Wellington looked the more likely team to snatch a winner after equalising through Ulises Davila in the 69th minute but Socceroos defender Grant dug the Sky Blues out of trouble on Sunday.

The right-back looped in a 77th-minute free-kick delivered by Brandon O'Neill, scorer of Sydney's scrappy first-half opener, to put Steve Corica's men level on six points with Western Sydney Wanderers ahead of next weekend's derby.

Wellington – who were without new signing Gary Hooper – registered 23 shots at Leichhardt Oval but ended the match empty handed and down to 10 men following a VAR review of Cacace's poor challenge on Anthony Caceres.

Earlier, Jamie Maclaren's first-half brace led Melbourne City to a narrow 2-1 win against Adelaide United at AAMI Park.

Riley McGree halved the margin after the hour and later squandered a good opportunity for a second as City clung on for their maiden A-League victory under Erick Mombaerts.

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