Defender Keith Keane will be forced to sit out of Tuesday's League Cup clash with Mansfield Town following his sending off at the weekend.
The former Luton man was red carded 21 minutes into the opening game of the season, when he brought down Pompey striker Connor Chaplin. That particular offence carries a one match ban, forcing him to miss the visit to Field Mill.
With Harrison McGahey missing out at the weekend, presumably through injury, Dale may be forced into something of a reshuffle at the back with Reece Brown filling in at centre half, with Joe Rafferty reverting to the starting line up.