Round 4 of the European Rugby Challenge Cup produced some impressive performances and here we look back at a few of them. 5: Apisai Naqalevu’s two tries for ASM Clermont Auvergne against the Dragons enabled the Fijian centre to join Sale Sharks utility back Chris Ashton at the top of the try-scorers' list with five. 17: Matt Healy’s try for Connacht Rugby in their 36-21 victory at Perpignan lifted his career total in the Challenge Cup to 17. 23: Worcester Warriors lock Anton Bresler made a round-high 23 tackles in the English club’s 23-7 home win over Paul. https://twitter.com/WorcsWarriors/status/1074680708751339521 28: Bordeaux-Bègles flanker Cameron Woki was a key figure in his side’s surprise 17-14 win at Sale and now leads the tables for lineouts won (28) and steals (5). 54: Zebre Rugby Club fly-half Carlo Canna is the leading Challenge Cup points scorer this season with 54 after his haul of 23 in the Italian side’s 58-14 home win over Enisei-STM. 74: Enisei-STM flanker Mikheil Gachechiladze comfortably heads the tackles table with 74, missing only five in four rounds.