Sydney produced their most potent scoring performance of the AFL season and added to Port Adelaide's woes on Saturday night, bolting to a 62-point win in their clash at the SCG.

The Swans kicked 13 goals to five in the second half on the way to registering their highest score of the season, winning 18.13 (121) to 9.5 (59).

It was Sydney's seventh straight win over Port, whose season record dipped to 1-7 with a fourth straight defeat.

Port dominated much of the first half, racking up far more possessions and marks, but didn't make Sydney pay on the scoreboard.

Sydney had 12 goalkickers, young forward Sam Reid kicking three and four other players booting two.

Warhorse midfielder Jude Bolton tallied 33 possessions for Sydney and Josh Kennedy 31.

Hard-working Travis Boak, who finished with 28 touches, was one of the few Port players to shine.

The visitors started the better in each of the first two quarters, but still trailed by margins of three and nine points at the first two breaks.

Sydney kicked four of the first five second-half goals to lead 62-33 early in the third term but Port hit back with the next three to once again get within nine points.

The Swans produced a decisive surge, notching the last three goals of the term to enter the final quarter with a 30-point buffer.

Among the goals in that second surge was one from Lewis Roberts-Thomson, who took a spectacular pack mark in his first senior game in ten months.

Port showed little fight in the final term in which Sydney slammed on six goals to one.

It was a different story early on, as Port, whose last win over Sydney was in round two of the 2006 season at the SCG, settled quicker.

They kicked the first two goals through Daniel Motlop and Jay Schulz.

Andrejs Everitt sparked Sydney, kicking a goal and setting up another for Craig Bird.

Co-captain Adam Goodes also goaled to put Sydney up by nine, but a major to Boak restricted the home team to a 3.5 to 3.2 advantage the first change.

The visitors regained the lead early in the second quarter with a goal to Matt Thomas, who kicked straight from about 45 metres after taking a mark.

They continued to push the Swans back but gleaned no reward on the scoreboard.

Sydney made them pay, as they grabbed the lead with goals late in the quarter to co-captain Jarrad McVeigh and Reid.

Sydney coach John Longmire was delighted with the run his team produced in the second half.

"We had a few players that were playing OK in the first half, but not enough," Longmire said.

"After halftime everyone jumped on board and it became a real weight of numbers issue in that second half when we didn't really have too many poor players in the final part of the game.

"A lot of the blokes in the end ended up with a lot of the ball. Our options going forward were a lot more potent and to have 12 goalkickers was a great return."

Port coach Matthew Primus lamented his side's inability to shut down Sydney's key on-ballers.

"The youth of our midfield wasn't able to stand against a pretty strong group in Sydney's," Primus said.

He acknowledged Port were in a dire position.

"It's a tough competition, we're in a hole there's no doubt about it and we've got to dig ourselves out of it," Primus said.

"There's no magic formula for that."

Primus reported Schulz suffered a hamstring injury and Chaplin corked a calf, while Sydney suffered no injuries.

Brought to you by AAP © 2024 AAP