Edin Dzeko can't stop scoring against Viktoria Plzen.
The Bosnia and Herzegovina striker netted a hat-trick to raise his tally to nine goals in eight matches against the Czech side as Roma revived their Champions League campaign with a 5-0 rout on Tuesday.
'I know them well,' a grinning Dzeko said. 'I have played against them in the Czech Republic before.'
Edin Dzeko celebrates with Roma team-mates on his way to a hat-trick against Viktoria Plzen
The Bosnian's volleyed effort from a long pass was the pick of his goals on Tuesday night
Turkey winger Cengiz Under added another for Roma - having previously hit the crossbar - and 19-year-old forward Justin Kluivert also knocked in a rebound.
In the Europa League two years ago, Dzeko scored a hat-trick for Roma against Plzen. He also got two against Plzen in the Champions League while with Manchester City in the 2013-14 group phase. His other goals against Plzen came when Dzeko played in the Czech Republic for Teplice from 2005-07.
Surprise semi-finalists last season, Roma are building confidence after an emotional 3-1 win over Lazio in the Rome derby on Saturday.
Having been thoroughly outclassed by three-time defending champion Real Madrid in the Group G opener, Roma are back in the battle for the knockout rounds.
CSKA Moscow, who beat Madrid 1-0 in Tuesday's other group match, leads with four points. Roma and Madrid have three points each and Plzen are bottom with one.
Justin Kluivert celebrates after scoring the first Champions League goal for his new club
Kluivert (not pictured) scores Roma's fourth goal past Viktoria Plzen's Matus