- Cardiff have won just one of their four home FA Cup matches against Reading (W1 D1 L2) - 2-0 in the third round in January 2009.
- This is only the second time Reading and Cardiff have gone to a replay in an FA Cup tie - they also did so in the fourth round in 1997-98 with the Royals progressing via a penalty shootout.
- Cardiff City have won their last two FA Cup replays, scoring four goals in each victory - a 4-1 win over Mansfield in January 2018 and 4-3 win over Carlisle in this season's third-round replay.
- Reading have won their last six FA Cup replays, last failing to progress via a replay in January 2008 when they lost 1-0 to Spurs in the third round.
- Reading have won one of their last seven away FA Cup matches, with that only win coming in a third-round replay away at Blackpool this season.