Port Vale will be aiming to reach the fifth round of the FA Cup for the first time this millennia as they host Championship side Bristol City.
The Valiants are currently struggling at the bottom of the League One table this season but are enjoying their best FA Cup run in over a decade.
However, the Robins thumped an in-form Watford 5-1 to progress to this stage of the competition and are contending for the play-offs in the tier above.
- Port Vale and Bristol City have never previously faced each other in the FA Cup, with this the first meeting between the two sides since a 3-1 victory for the Robins in League One in February 2015.
- Bristol City have won eight of their last nine games against Port Vale (D1) – since the first game in this run in April 2005, their 89% win-rate against the Valiants is their strongest against any side they've played more than three times.
- This is Port Vale's first FA Cup fourth round tie since falling to a 3-1 defeat to Brighton in 2013-14. The Valiants have been eliminated from five of their last six ties at this stage of the competition, last progressing to the fifth round in 1995-96.
- Bristol City have progressed from five of their last six FA Cup ties against sides from a lower division, while they have won eight of their last 10 away games in the competition against lower tier opponents.
- Emil Riis has been involved in five goals in four starts in the FA Cup (4 goals, 1 assist), scoring a hat-trick for Bristol City in their 5-1 win in this season's third round, their first FA Cup hat-trick since Phil Jevons in December 2006 against Gillingham
