Feyenoord head coach Arne Slot hailed the "unreal" clinical display from his side after thumping Shakhtar Donetsk 7-1 in their Europa League last-16 second leg.

Thursday's contest at De Kuip was far less evenly contested than last week's 1-1 draw, with Santiago Gimenez getting the ball rolling for the hosts inside nine minutes.

Orkun Kokcu scored twice before half-time and Oussama Idrissi likewise after the restart, before Alireza Jahanbakhsh and Danilo completed the rout by the 66th minute.

Kevin Kelsy pulled a goal back late on, but it was of no real consolation to the Ukrainian visitors as they bowed out of the competition.

It marks the second-biggest win for a Dutch side in a major European competition at this stage or beyond, after Ajax's 10-0 win over Omonia Nicosia in the 1979-80 European Cup.

Reflecting on a memorable result for his side, Slot said: "It was unreal how we put the match to bed so quickly.

"Normally we need more chances to score, so compliments to my players for being so efficient this evening.

"Shakhtar had a good spell in the first half, and you saw how our players blocked their shots in the box. They were so determined to get a good result."

Feyenoord are now unbeaten in 16 matches this calendar year, with their thumping victory against Shakhtar coming three days before facing fierce rivals Ajax.

Slot's side are three points better off than Ajax at the summit ahead of Sunday's Eredivisie showdown at the Johan Cruijff ArenA.

"Of course this victory helps for the duel with Ajax," Slot said. "This gives a lot of confidence. 

"But I also see that Ajax have regained the level they had at the start of the season. Ajax have a good team again."