Sunderland take on Portsmouth on Saturday before Doncaster entertain Charlton a day later with both games live on talkSPORT 2.
In a rematch of their Checkatrade Trophy final encounter, which Pompey won 5-4 on penalties in March, Sunderland will be looking for revenge.
As of Thursday, 21,747 home tickets had been sold for the first leg clash at the Stadium of Light.
Portsmouth’s allocation has been cut to 2,000 following crowd trouble when the two sides met last month after a Pompey supporter was arrested for throwing a flare at Sunderland supporters.
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- Tranmere vs Forest Green (Friday, 7:45pm) – talkSPORT 2
- Aston Villa vs West Brom (Saturday, 12:30pm) – talkSPORT
- Derby vs Leeds United (Saturday, 5:15pm) – talkSPORT
- Sunderland vs Portsmouth (Saturday, 7:30pm) – talkSPORT 2
- Doncaster vs Charlton (Sunday, 12:15pm) – talkSPORT 2
- Tottenham vs Everton (Sunday, 3pm) – talkSPORT 2
- Mansfield vs Newport (Sunday, 6pm) – talkSPORT 2
For the second leg, tickets in the home end at Fratton Park are sold out, while tickets for travelling Sunderland fans have yet to be released.
Charlton have sold out their allocation for their trip to the Keepmoat Stadium as over 3,700 fans will be cheering their team on.
Doncaster’s stadium holds 15,231 supporters, and while home tickets have not sold out, there is expected to be a packed crowd.