Huddersfield Town and Birmingham City will have to face off again after their FA Cup clash at John Smith's Stadium ended level on Saturday.
Steve Mounie headed Huddersfield in front after 21 minutes with his fifth goal since signing from Montpellier.
But the Blues — the Championship's lowest-scoring team — hit back through Lukas Jutkiewicz on 54 minutes to leave both teams in the hat for the fifth round.
More to follow.
Huddersfield Town XI: Joel Coleman, Michael Hefele, Chris Lowe, Terence Kongolo, Florent Hadergjonaj, Collin Quaner, Abdelhamid Sabiri, Danny Williams, Jonathan Hogg, Rajiv van La Parra, Steve Mounie
Birmingham City XI: David Stockdale, Carl Jenkinson, Harlee Dean, Marc Roberts, Che Adams, Michael Morrison, Cohen Bramall, Jason Lowe, Cheikh Ndoye, Jota, Lukas Jutkiewicz