The Clarets looked to be heading for a draw until Brownhill delivered the sting in the fourth minute of added-on time.
Burnley had to come from behind after Callum Lang had given Pompey a lead against the run of play in the first half.
Jeremy Sarmiento levelled just two minutes after coming on as a second-half substitute, the Brighton loan signing firing inside the far post with a curling effort from the left side of the area.
Portsmouth had done their best to eat up the clock with a series of time-consuming injuries and substitutions a, before Brownhill struck.
Clarets boss Scott Parker insisted the ball fell to the right man in the dying minutes given the midfielder’s experience and composure in crunch moments.
“He gives you every bit of that experience and composure,” said Parker.
“He understands and has the nous around the football pitch and this division.
Denne historien er fra September 22, 2024-utgaven av The Football League Paper.
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Denne historien er fra September 22, 2024-utgaven av The Football League Paper.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
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DANIEL, RICHIE AND MAT LEAD THE WAY
DANIEL Farke, Richie Wellens and Mat Sadler have grabbed the glory in the final Sky Bet EFL Manager of the Month awards of 2024.
MATT FINISHES HELP SADDLERS EASE TO CLUB RECORD-RIN
WALSALL moved 13 points clear at the top by thrashing struggling Tranmere to set a new club record of eight successive league wins.
WEIMANN ATONES FOR HIS HOWLER
JOHN Eustace praised Andreas Weimann for putting one of the misses of the season behind him as the Blackburn striker scored the only goal to knock out Middlesbrough.
RUTTER'S AT THE DOUBLE TO TORPEDO CANARIES.
NORWICH head coach Johannes Hoff Thorup believes this heavy defeat at the hands of Brighton will be an important part of the learning curve for his Championship outfit.
WICKY'S ON HIS WAY AS BAGGIES MOVE ON
CHRIS Brunt admitted that his job “could be done” as West Brom prepare to appoint their successor to Carlos Corberan.
Cifuentes unhappy with his Hoops
QPR manager Marti Cifuentes was less than impressed with his side after they shipped six goals in a heavy defeat at Premier League strugglers Leicester City.
ENNIS' LATE GOAL A BOOST FOR POTTERS
STOKE CITY boss Mark Robins says he’s worried about the lack of fan interest in the FA Cup after seeing his team go through to the fourth round thanks to a late winner from sub Niall Ennis at the Stadium of Light.
RAMAZANI SPARES THE BLUSHES OF WHITES
Sulphurites downed by Yorkshire rivals
Injury-hit Polish ace is getting up to speed
PRZEMYSLAW Placheta has been in England for fourand-a-half years now, but it’s unlikely you’ve noticed.
Starlet Ben should stick with Riverside
BEN DOAK is a Premier League player alright, but what’s the hurry? He’s 19, flying and bang in the race for promotion.
