Derry City are up to second in the SSE Airtricity Premier Division this morning.
An injury-time strike from Ryan Graydon gave them a 1-nil win away to Shelbourne last night.
Dundalk had Darragh Leahy sent off in the first half of a 2-nil defeat away to Sligo Rovers.
Derry move ahead of Dundalk on goal difference with a game in hand while they trail leaders Shamrock Rovers by seven points with a game more played.
Manager Ruaidhri Higgins said it was a big win for his side: