Pompey had to fight from behind before securing all three points against Bolton.
They netted a trio of late goals at a rainy Fratton Park to win 3-1 and stun their in-form opponents.
Dion Charles netted for the visitors early in the second half, but Ryley Towler nodded home for his first Blues goal.
And the defender then netted again before Colby Bishop's neat flick made of the victory for John Mousinho's side.
Fans can watch the key moments (top video) or register with iFollow for extended highlights (middle video) and a full match replay (bottom video).
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