Sevilla stayed firmly on course for a second consecutive Europa League crown when an Aleix Vidal double and a Kevin Gameiro strike secured a thumping 3-0 win at home to Fiorentina in their semi-final first leg.

Chasing a record fourth triumph in Europe's second-tier club competition, Sevilla took the lead in the 17th minute at a festive Sanchez Pizjuan stadium when Vidal thrashed a low shot into the corner from a Carlos Bacca layoff.

The Spanish midfielder made it 2-0 to the Andalusians seven minutes into the second half when Vitolo released him into space on the right of the penalty area and he finished clinically past Fiorentina goalkeeper Neto.

Substitute Gameiro put the tie virtually beyond the Italians 15 minutes from time when he scored with his first touch just under 30 seconds after replacing Bacca following good work down the left from fullback Benoit Tremoulinos.

Fiorentina's Serie A rivals Napoli squandered the lead and drew 1-1 at home to Ukrainian side Dnipro Dnipropetrovsk in their semi-final, first leg, with the return legs to be played in a week's time.

Sevilla won back-to-back UEFA Cups in 2006 and 2007 and can eclipse Inter, Juventus and Liverpool, who each won the competition three times.