The biggest change from the European side involved five teams. Denis "seized" Kostin and Ladislav "GuardiaN" Kovács were removed from the Natus Vincere (Na'Vi) lineup. GuardiaN then joins the FaZe Clan lineup, replacing Aleksi "allu" Jalli as its AWPer. allu later joins OpTic Gaming. Danylo "Zeus" Teslenko, one of the founding members of Na'Vi's CS:GO team, returns to Na'Vi despite having just won the PGL Major 2017 with Gambit Esports. Zeus cited that if Gambit cut its coach, Mykhailo "kane" Blagin, then Zeus would leave, too. Gambit did cut kane and Zeus followed him to Na'Vi. seized then returns to the active lineup for Na'Vi to complete its five-man roster. Fnatic and LGB eSports legend Olof "olofmeister" Kajbjer stepped down from Fnatic's roster. The HLTV.org's best player of 2015 went on to join FaZe to replace Fabien "kioShiMa" Fiey. Fnatic trades Dennis "dennis" Edman to GODSENT for Jonas "Lekr0" Olofsson. GODSENT co-founder Markus "pronax" Wallsten is replaced by Jacob "pyth" Mourujärvi for the season. Fredrik "freddieb" Buö is then officially signed by GODSENT as its new in-game leader after transferring over from Epsilon eSports. Maikil "Golden" Selim is the promoted from Fnatic Academy to the main roster as in-game leader and Fnatic fills out its roster. Near the end of the regular season, seized steps down from Na'Vi's active roster and is temporarily replaced by Aleksey "1uke" Zimin; seizes cited the pressure to perform well had taken a toll on him, but his performance was lackluster, even after Zeus had come in to take the big responsibility of in-game leader from seized's shoulders. Later, Na'Vi acquired FlipSid3 Tactics star Denis "electronic" Sharipov and loaned seized to FlipSdi3.
