Barlow will take the field with the rest of the side at this weekend's SCG clash, replacing forward Nick Davis.
Senior coach Paul Roos said the young midfielder will bring additional speed to the side.
“[Barlow]'s very fit, so he gives us a bit more run and carry," said Roos.
"We can already see where the game is heading with the running type athlete and we think he's going to be a good player."
Roos pointed out that Barlow is still very much in the process of developing as a footballer.
In the absence of running defender Nick Malceski, Barlow's speed is even more of an asset to his club.
Sydney Swans vs. Port Adelaide
Sunday 30th March, 1:10 PM
Sydney Cricket Ground
Sydney Swans
B: Kennelly, Barry, Mattner.
HF: O’Keefe, O’Loughlin, J Bolton.
F: Bird, Hall, Grundy.
FOL: Jolly, Goodes, Moore.
INT: Ablett, Barlow, Bevan, Richards.
EMG: Brennan, Davis, Mathews
IN: Barlow
OUT: Davis
Milestones: Luke Ablett (100 Games)
Martin Mattner (100 Games)
Port Adelaide Power
B: Pettigrew, Carlile, Surjan
HB: Burgoyne, Thurstans, Cassisi
C: Boak, C Cornes, K Cornes
HF: Roday, Westhoff, Pearce
F: Motlop, Tredrea, Ebert
FOL: Lade, Salopek, Burgoyne
INT: Brogan, Chaplin Stewart, Thomas
EMG: Bentley, White, Logan
IN: Chaplin
OUT: Logan