Port Adelaide have notched a third consecutive win after a season best outing at Adelaide Oval.

The Power surged to a 71-point lead before the Swans notched their first score, finishing the match with a 22.16 (148) to 5.6 (36) victory on Saturday.

It leaves Ken Hinkley's charges a chance to sit second on the ladder should results fall their way on Sunday. Sydney now lead the competition by just four points.

Port young gun Mitch Georgiades and Willie Rioli both kicked four goals, while Willem Drew kept Swans ball magnet Chad Warner to just 19 touches.

Drew also led the game with 32 disposals, well supported by Ollie Wines, Zak Butter and Jason Horne-Francis.

Darcy Byrne-Jones continued the onslaught, scoring a major just thirty seconds into the second term.

A rushed behind gave Sydney its first score near the 20-minute mark before Isaac Heeney broke through with his side’s first major.

Speaking in a post-match press conference, senior coach John Longmire said the team failed to play to standard. 

08:26

"It's completely and utterly unacceptable. It's not up to standard" - Longmire

Watch Sydney’s press conference after round 21’s match against Port Adelaide

"It's completely and utterly unacceptable. We've been in every game this year until last week and we dropped away last week," Longmire reflected.

"We've played three good teams the last three weeks in good form, but you need to have a baseline. We didn't have that tonight."

Hayden McLean was Sydney's only multiple goalscorer with two, while Errol Gulden led with 25 disposals and Brodie Grundy produced eight clearances.

Former Port ruck Peter Ladhams featured in his first game of the season after coming in for key forward Joel Amartey (managed) as a late swap.

Sydney returns home to host Collingwood at the SCG on Friday night. The club will celebrate its Hall of Fame dinner on Thursday night with several past players to be inducted. 

ROUND 21 HIGHLIGHTS

  • 08:26

    "It's completely and utterly unacceptable. It's not up to standard" - Longmire

    Watch Sydney’s press conference after round 21’s match against Port Adelaide

    AFL
  • 07:05

    Highlights: Port Adelaide v Sydney

    The Power and Swans clash in round 21

    AFL
  • 00:36

    Heeney finally breaks drought

    It took until late in the second term, but Isaac Heeney finally puts through his side’s first major

    AFL

PORT ADELAIDE    7.3    13.8    17.9    22.16 (148)
SYDNEY                 0.0     1.3      3.4     5.6 (36)

GOALS
Port Adelaide: Georgiades 4, Rioli 4, Dixon 3, Houston 2, Evans 2, Sweet, Rozee, Ratugolea, Horne-Francis, Byrne-Jones, Boak, Wines
Sydney: McLean 2, Hayward, Adams, Heeney

BEST
Port Adelaide: Drew, Georgiades, Horne-Francis, Houston, Butters, Rozee
Sydney: Gulden, Blakey, Heeney, Grundy

INJURIES
Port Adelaide: Nil
Sydney: Nil

SUBSTITUTES
Port Adelaide: Quinton Narkle, replaced Darcy Byrne-Jones at three-quarter time
Sydney: Luke Parker, replaced Corey Warner in the second quarter

Crowd: TBC at Adelaide Oval