The Reds crushed Victory courtesy of three second-half goals, after a goalless first-half where Taylor Regan's crunching tackle on Mitch Austin was the major talking point at Marden Sports Complex.

FFA Cup last 16 pic special

South Melbourne were far too good for 10-man Sorrento at Lakeside Stadium, triumphing 4-1 with Nick Epifano netting a double.

Gold Coast City triumphed 1-0 over fellow NPL Queensland opponents Moreton Bay United in extra-time at Wolter Park.

Newly crowned NPL Victoria premiers Heidelberg United reached the quarter-finals after a dramatic 4-3 penalty shootout win over Sydney United 58 at Edensor Park.

Adelaide United 3 (Absalonsen 53', Blackwood 66', Konstandopoulos 89') Melbourne Victory 0

The Reds progressed with Danish winger Johan Absalonsen opening the scoring with a thumping strike shortly after the interval.

Adelaide doubled their advantage when Rhys Williams handballed inside the box, with George Blackwood converting the spotkick.

Nathan Konstandopoulos rounded out the scoring with the best goal of the night, curling the ball into the top corner from outside the box.

FFA Cup last 16 pic special

FFA Cup last 16 pic special

South Melbourne 4 (Minopoulos 1', Epifano 40', 90', Lujic 70') Sorrento 1 (Witschge 90')

The NPL Victoria club got the perfect start with Leigh Minopoulos netting inside the first 60 seconds after a goalmouth scramble.

South doubled their advantage five minutes prior to the break with a sweeping move ending with Nick Epifano scoring.

Sorrento's Sean Canham was sent off shortly prior to the interval, leaving the visitors with a mountain to climb.

Milos Lujic headed in a third, before Scott Witschge netted a late consolation. Epifano grabbed his second, after Jesse Daley's pass, to seal an emphatic win deep into stoppage-time.

Sydney United 58 1 (3) (Vranic 119') Heidelberg United 1 (4) (Ellis 111')

The Bergers edged United at Edensor Park after a dramatic penalty shootout, with goalkeeper Chris Theodoridis clinching the win with a spotkick save.

After the match ended goalless after 90 minutes, Sean Ellis put the Bergers ahead in extra-time.

United levelled through Adrian Vranic with barely a minute remaining before the game went to penalties.

Panni Nikas missed United's first penalty and Heidelberg converting all four of their spotkicks, before Theodoridis denied Yianni Fragogianni to secure their quarter-final spot.

Moreton Bay United 0 Gold Coast City 1 (Smith 108') AET

Gold Coast edged their NPL Queensland opponents after the game went to extra-time following a goalless draw at Wolter Park.

Sam Smith won and converted a penalty on 108 minutes for City to clinch their progress to the final eight.

FFA Cup last 16 pic special