Pompey make the trip to west London this weekend to face QPR at Loftus Road.
The Blues head to the capital on Saturday on a disappointing run of form, which has seen them fail to win any of their previous five Championship matches.
John Mousinho continues to be affected by injuries, with Harvey Blair the latest to join the absent cohort as he sat out Monday’s defeat to Derby County with a groin issue.
With 10 players potentially missing out this weekend, we’ve taken a look at the current injury situation at Fratton Park and when the Blues’ missing players could return to the fold.
5. Thomas Waddingham
A hugely-frustrating campaign for the Aussie, who continues to be absent through injury. Despite featuring in the Blues' opening five matches in all competitions, the striker hasn't been seen since due to a quad issue sustained in training. Waddingham has been forced to sit out the following seven months of action, with Mousinho still in the dark over a potential comeback date. Exepcted return: N/A. | Steve Bailey/ProSportsImages
6. Josh Murphy
Murphy hasn't had the season he or Pompey would've wanted, with Mousinho's star forward sidelined for large parts of the campaign. The winger has featured just 14 times this term due to separate injury issues. His latest set-back - a fractured metatarsal - forced his campaign to come to a premature close, with his last outing coming against Derby in December. Expected return: Pre-season. | Steve Mower/ProSportsImages
7. Harvey Blair
Blair is the latest casualty on the Blues' injury list, with the winger nursing a minor groin issue. The winger was a surprise absentee for Monday's defeat to Derby, with Mousinho confirming the set-back after the game - and insisting the 22-year-old would likely remain out until after the international break. However, Blair has made a swift comeback to training and is expected to be named on the bench against QPR this weekend. Expected return: QPR (March 21). | Graham Hunt/ProSportsImages
8. Franco Umeh
The Irishman remains one of the Blues' long-term absentees after suffering a fresh hamstring injury against Arsenal in January. After recovering from a similar set-back, which forced him to miss the first three-and-a-half months of the season, Umeh featured just twice in all competitions before suffering his latest blow two months ago. The winger underwent surgery but isn't pencilled in to return before the season's close. Expected return: Pre-season. | Graham Hunt/ProSportsImages