Pompey visit Sunderland this weekend in what could prove to be a crucial contest in the race for League One promotion.
But it is the hosts who are the 6/5 favourites with Sky Bet to collect all three points at the Stadium of Light.
Pompey won 3-1 when the sides met at Fratton Park earlier in the campaign and a repeat of that scenario carries odds of 28/1.
Those who reckon Craig MacGillivray will produce a solid showing could instead be interested in backing a Blues clean sheet at 11/4.
And there is also the option of Pompey recovering from an interval deficit to emerge triumphant at 33/1.
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