FA Cup 4th round round-up: Sheffield United sneak past Plymouth while West Ham and Swan run riot
YVES BISSOUMA hit a 30-yard cracker for Brighton as the Seagulls and fellow Premier League strugglers Sheffield United sneaked past third-tier opposition in the FA Cup fourth round.
Elsewhere, West Ham, Swansea and Bristol City pulled off big wins, with Barnsley stunning Championship leaders Norwich to also reach the last 16.
Brighton battled past League One Blackpool 2-1, courtesy of Bissouma's stunner and Steven Alzate's deflection.
Meanwhile, Chris Basham and Billy Sharp seemingly put the Blades in control against Plymouth but Pereira Camara's 75th-minute reply gave Chris Wilder's men an uncomfortable finale.
Elsewhere, the Hammers dispatched Doncaster 4-0, with debutant 23-year-old striker Oladapo Afolayan bagging their simple fourth goal eight minutes after coming on as a sub.
TODAY'S FA CUP 4TH ROUND RESULTS
Here are the results so far from today's last-32 action.
Southampton 1 Arsenal 0
Barnsley 1 Norwich City 0
Brighton & Hove Albion 2 Blackpool 1
Millwall 0 Bristol City 3
Sheffield United 2 Plymouth Argyle 1
Swansea City 5 Nottingham Forest 1
West Ham 4 Doncaster Rovers 0
Andriy Yarmolenko was involved in Pablo Fornals' s early opener before doubling West Ham's lead himself with a lob.
Then after the break Andy Butler's own goal and Afolayan's special moment completed the rout.
Swansea saw off in-form Championship rivals Nottingham Forest 5-1 to reach the fifth round for the third time in four seasons.
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Liam Cullen and Matt Grimes netted two apiece, while sub Oli Cooper rounded off the romp in just his second senior appearance.
Callum Styles' notched Barnsley's deserved winner against second-tier high-fliers Norwich.
Finally, Bristol City won 3-0 at Millwall in another all-Championship tie, Nahki Wells providing a deflected free-kick goal and an assist.