Monk has been ruled out for two to three weeks with a calf strain sustained in Sunday`s 1-0 win over Middlesbrough, while Tate received his fifth booking of the season at the Liberty Stadium and will now serve a one-match ban.
That means Albert Serran and Neil Taylor are both likely to come in, with the former partnering Ashley Williams at centre-back and the latter coming in at left-back. Angel Rangel will take his place at right-back.
Premier League target Williams has been given the captain`s armband just a month after leading out Wales.
Should third-placed Swansea take all three points at the Keepmoat Stadium then they will set a new club record for their fifth away win on the trot, while a fourth successive clean sheet on the road would equal another proud achievement.
Source: PA
Source: PA