Whoever loses first, the other 3 qualify. Below is the example

If FUT lose first, FNC, TL and NAVI qualify for Champs
If NAVI lose first, FNC, TL and FUT qualify for Champs
If TL lose first, FNC, FUT and NAVI qualify for Champs
If FNC lose first, TL, FUT and NAVI qualify for Champs