On the eve of this year's European Challenger Series, the season has already seen a fair amount of changes.

HUMA signs new roster

LoL esports has revealed HUMA's new squad and it consists of a group of entirely new players.

Their new roster is: top laner Jesper "Jwaow" Strandgren, jungler Matthew "Impaler" Taylor, mid laner Marc "Caedrel" Robert Lamont, AD carry Kristoffer "Krislund" Pedersen and Daniel "Wendelbo" Ernst Wendelbo as support. Leon "Lamabear" Krüger will be the team's substitute jungler.

HUMA's team's roster was left vacant following the departure of all the team's players within a two-month time period.

Mid laner Dan "Godbro" Van Vo, jungler Rudy "Rudy" Beltran, and top laner Jorge "Werlyb" Casanovas left in April. Support Christophe "je suis kaas" van Oudheusde and AD carry Anıl "HolyPhoenix" Işık left in May.

Roughly a week after HolyPhoenix left, HUMA announced that they would sign Daniel "Vorborg" Vorborg as head coach, and Danusch "Arvindir" Fischer as new strategic coach.

The team will debut it's new roster in their first match of the season against Nerv.

Nerv acquires Copenhagen Wolves seed

Nerv, a newly formed esports organization, have acquired Copenhagen Wolves EU CS seed, according to LoL esports.

Their roster includes former CPH Wolves top laner Mike "Wickd" Petersen. Joining Wickd on Nerv's roster is: jungler Jonas "Memento" Elmarghichi, mid laner Dan "Godbro" Van Vo, AD carry Tomáš "Nardeus" Maršálek and Bram "wewillfailer" de Winter as support. Illimar "Ulfren" Issak and Pere "Calsot" Merino join as substitute mid laner and AD carry, respectively.

CPH Wolves still list their EU CS team on their website. It is unclear whether or not the roster has disbanded completely.

Their first game of the split will be against HUMA.

Epsilon enters EU CS, signs Inspire eSports roster

Belgian organization, Epsilon eSports have entered the EU CS after acquiring Inspire eSports' seed and roster, according to LoL esports.

Inspire tweeted in April that they will not participate in this season's series.

Inspire's former mid laner Sofyan "CozQ" Rechchad, substitute support Michael "Michai" Schorr, and top laner Max "Satorius" Günther will continue to play together under Epsilon's banner. Joining them are: jungler Thomas "Kirei" Yuen, AD carry Paweł "Woolite" Pruski and Lewis "NoXiAK" Felix as support. Sebastian "Sebekx" Smejkal joins as substitute mid laner.

As a result of the move, Inspire's roster has completely disbanded.

Epsilon's first match of the season will be against Millenium.

Will Alcopra is a news editor for theScore esports. You can follow him on Twitter.