Five unanswered goals from Port Adelaide in 10 frantic minutes in the second quarter turned Friday night's game on its head, as Richmond fell to the Power by 14 points.
The Power booted seven goals to two in the second quarter to set up their seventh win of the year – 10.12 (72) to 8.10 (58) – in front of a crowd of 39,936.
After half-time, Port only kicked one goal, but the Tigers didn't do enough going forward to haul in the 23-point deficit from the main break.
Neither side could make a huge impact on the scoreboard in the third term, but Tigers forward Jason Castagna – in his first game back after missing two weeks with a knee injury – ran into an open goal late in the term to keep the visitors in the hunt.
Castagna was prominent again with a sensational contested mark, before calmly kicking his second goal to narrow the gap to nine points at the nine-minute mark of the last quarter, but couldn't get any closer from that point.
Kane Lambert had 26 touches for the Tigers, Jayden Short finished with 25 and Jack Riewoldt kicked three goals.
The Power won contested possessions by 24 (60-36), Inside 50s by 12 (21-9) and disposals by 41 (115-74).
The Power's decision to throw enigmatic forward Chad Wingard into the midfield was a masterstroke, the two-time All Australian sparking to life with a game-high 31 disposals.
Out-of-contract midfielder Ollie Wines showed why the Power are so keen for his signature with a brilliant performance with 29 disposals (16 contested), receiving great support from bash brother Sam Powell-Pepper.
Winger Jared Polec (28, 16 contested) provided plenty of run on the outside and veteran Justin Westhoff had 23 disposals and three goals, all in the first half.
PORT ADELAIDE 2.2 9.5 10.7 10.12 (72)
RICHMOND 3.3 5.6 7.8 8.10 (58)
GOALS
Port Adelaide: Westhoff 3, S.Gray 2, R.Gray 2, Dixon, Polec, Motlop
Richmond: Riewoldt 3, Edwards 2, Castagna 2, Miles
BEST
Port Adelaide: Powell-Pepper, Wines, Polec, Wingard, Rockliff, Byrne-Jones
Richmond: Grigg, Short, Lambert, Edwards, Cotchin, Riewoldt, Rance
INJURIES
Port Adelaide: TBC
Richmond: Astbury (ankle)
Reports: TBC
Umpires: Chamberlain, Harris, Ryan
Official crowd: 39,936 at the Adelaide Oval
