Gonzalo Higuain scored twice as Napoli strengthened their claim for a Champions League place with a 4-2 come-from-behind victory over Sampdoria in Serie A.
Raul Albiol's early own goal gave Samp a shock lead but fourth-placed Napoli wrested back control before half-time thanks to strikes from Manolo Gabbiadini and Higuain.
A superb third from Lorenzo Insigne put the Azzurri firmly in control and there was still time for Higuain to add another from the spot to bring Napoli to within two points of Roma.
Napoli coach Rafael Benitez has said he will not be underestimating Europa League semifinal opponents Dnipro Dnipropetrovsk.
Benitez -- who is looking to lift the trophy for a third time, having done so with Valencia and Chelsea -- has warned his players to be aware of the threat the Ukrainian side will pose, with the first leg being played in Italy.
"When you reach the semifinals of a European competition, it means you're an international top quality side," he told Napoli's official website.