PORT Adelaide has locked in a third-place finish with a 31-point win over Richmond in its final match of the home and away season, booking a qualifying final date with Brisbane at its Gabba fortress in the process.

Fringe Port forward Francis Evans, who was a late addition to the Power's starting 22 after Todd Marshall was withdrawn due to a hip injury, kicked three goals in the 13.16 (94) to 8.15 (63) victory on Sunday at Adelaide Oval.

The Power's victory over the Tigers sees them finish behind the second-placed Lions on percentage, and while the time and date of the 2v3 battle is yet to be determined, Brisbane will host. The other qualifying final is also now locked in, with ladder leaders Collingwood to host fourth-placed Melbourne.

Richmond, led by the mercurial Dustin Martin, produced a spirited performance but will finish 13th.

Martin's equal game-high 33 disposals included seven inside 50s and a goal. Teammate Shai Bolton scored two majors before leaving the field with a lower leg injury in the fourth quarter, while Thomson Dow (27 touches) and Jayden Short (26) were also prominent.

Port's young dynamic trio of Connor Rozee (33 disposals, one goal), Zak Butters (30) and Xavier Duursma (22 and one) were key to the Power winning the midfield battle

Dan Houston (27 disposals, nine marks and a goal) was influential off half-back, while Sam Powell-Pepper, Willie Rioli and Ollie Lord each chipped in with two goals.

Port led by 6.7 to 5.11 at half time with the Tigers' goalkicking inaccuracy preventing the visitors from cashing in on their territorial advantage; they registered 34 to 21 inside 50s for the half.

Those roles reversed in the third term as Port scored a wayward 2.6 from 18 inside 50s and the Tigers added 2.2 from seven entries.

Neither team could score a goal in the final term until Port's Powell-Pepper struck in the 15th minute, rapidly followed by Evans' mid-air soccer for his third which effectively sealed victory.

PORT ADELAIDE     4.3    6.7       8.13    13.16 (94)
RICHMOND             3.4    5.11     7.13     8.15 (63)

GOALS 
Port Adelaide: Evans 3, Lord 2, Powell-Pepper 2, W. Rioli 2, Houston, Byrne-Jones, Duursma, Rozee
Richmond: Bolton 2, Graham, Bauer, Soldo, D.Rioli, Banks, Martin

BEST 
Port Adelaide: Rozee, Butters, Duursma, Houston, Drew
Richmond: Martin, Short, Dow, Nankervis, Bolton

INJURIES 
Port Adelaide: Nil
Richmond: M. Rioli jnr (hamstring), Bolton (TBC)

SUBSTITUTES 
Port Adelaide: Dylan Williams replaced Sam Hayes in the third quarter
Richmond: Rhyan Mansell replaced Maurice Rioli jnr in the third quarter

Crowd: 39,860 at the Adelaide Ova