Pompey will try to maintain their position at the League One summit when they host Wycombe this weekend.
And Kenny Jackett’s side are the 4/6 favourites with Sky Bet to secure all three points from the Fratton contest.
It finished 4-2 to the Blues when the sides last met on the south coast in the league and a repeat of that scenario is priced 50/1.
And if you think Pompey will have to battle from an interval deficit to come out on top, then that carries odds of 25/1.
Skipper Brett Pitman and top scorer Ronan Curtis are the joint 7/2 favourites to net the opener on Saturday.
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