• For the first time in the UEFA Europa League's five-year history all four quarter-final ties were won by the team playing the second leg at home. Indeed, SL Benfica, Juventus, Sevilla FC and Valencia CF all progressed with victories in front of their own fans.
• Benfica set two new UEFA Europa League records with their 2-0 win at home to AZ Alkmaar – the most victories (24) and the most goals (66).
• The Portuguese club also maintained their record of never having lost a UEFA Europa League match at home. Their 17 games at the Estádio da Luz have produced 15 wins and two draws. However, this is still two short of the competition record for successive home matches unbeaten, posted by their Lisbon rivals Sporting Clube de Portugal.
• Benfica and Juventus, who transferred over from the UEFA Champions League after the group stage, are both unbeaten after six UEFA Europa League games, with five victories and one draw apiece.
• Juve have only ever lost one UEFA Europa League fixture – 4-1 at Fulham FC in the 2009/10 round of 16. Their undefeated run stands at 12 matches, and if they can prolong it through the semi-finals and final, they will equal Club Atlético de Madrid's competition record.
• Valencia made history by becoming the first side to recover from a three-goal first-leg deficit in a UEFA Europa League knockout phase tie. It was the third time the club had advanced in the competition after losing the first leg. No other team has managed that feat.
• Valencia also matched the biggest win in the competition with their 5-0 victory (after extra time) at home to FC Basel 1893. It remains a remarkable statistic that although five goals have now been scored by a club in a UEFA Europa League game on 25 occasions, no side has ever scored six or more in the competition's 1,020 matches, group stage to final.
• Paco Alcácer's hat-trick for Valencia was the 25th registered in the UEFA Europa League and the fourth this season. Three of those have been scored by Spaniards, with the Valencia forward following in the footsteps of Jonatan Soriano (FC Salzburg) and Roberto Soldado (Tottenham Hotspur FC). The odd man out is Trabzonspor AŞ's Turkish striker Olcan Adın.
• The 15 goals netted in the quarter-final second legs tallied with the competition record set in 2010/11.
• Juventus's 3-1 aggregate triumph over Olympique Lyonnais enabled them to become the first Italian club to reach the UEFA Europa League semi-finals. Italy has thus become the seventh nation represented in the last four of the tournament.
• The Iberian dominance of the latter stages of the UEFA Europa League has been maintained by the progress of Sevilla, Valencia and Benfica. Of the 20 teams that have contested the semi-finals of the competition, seven have been from Spain and six from Portugal. Of the other countries to have taken a club into the last four, only England – with three sides – can also boast multiple representation.
• Benfica have become the first club to get to the UEFA Europa League semis three times. Valencia will be involved at this stage for the second time.
• Sevilla are the longest surviving team in the competition and have become the fourth to proceed to the UEFA Europa League semi-finals having started in the third qualifying round – after Fulham and Hamburger SV (2009/10) and 2011/12 winners Atlético.
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