The reason for this is FURIA and EG. The last three SEN games are: EG, KRU and FUR - and NRG: FURIA, LOUD and EG.
EG are entering a good phase at the end of the group stage and are playing with a motivation of having to play giving their blood, because, eg's ceo said "if they don't show good results in 1 month everyone will have to start learning Chinese". I conclude that SEN and NRG will not beat EG and they will went to playoffs.
Now about FURIA, they have great potential to destroy NRG and SEN life. If FURIA beats NRG they will completely destroy their momentum. The script is: EG opens Sentinels coffin and FURIA buries it, FURIA opens NRG coffin and EG buries it.