So he moved to super featherweight and not going to defend his belt at featherweight? that's weird though, at least it's before to defend it one time before going up in weight.
He still holds the WBC Featherweight title. It's just that the WBC Super Featherweight title got vacated and as a WBC Champion at 126, he is qualified to fight for the vacant WBC 130 lbs title. If he wins, he needs to decide whether to continue in the new division, the 130 lbs, or return to 126 lbs to defend his crown or to push to his original plan, hoping for unification fights against WBA Featherweight Champion Leo Sta Cruz.
To simply explain this:
- if Rey Vargas will win against Foster, likely he will continue his journey at 130lbs and will give up his 126lbs title
- if Rey Vargas will lose against Foster, he will return to 126lbs as a champion and will mandatory face the winner between Mark Magsayo and Brandon Figueroa for his title defense match
- if Rey Vargas will finally move up to 130lbs as a champion, the winner between Magsayo and Figueroa will be elevated as a full champion
Someone can correct me on this if I missed something.
-I also think the first two option is possible to happen, if Rey Vargas is able to win the 130 lbs title, it is obvious that he will continue his journey in this division making him vacate the other title in 126lbs
-If he lost I agree that he will go back to 126 lbs since there is nothing to do on the 130 lbs. staying there without a title is just a waste of possible matches in the lower division.
-The third one i think depends on the timing. If Vargas vacated the title before the fight between Magsayo and Figueroa,then who ever the winner betwen Magsayo and Figueroa will be the champion if the governing body declare the fight is for the vacant title belt. But if the fight happen before Vargas relinquish his title then, I believe there will be another match for the vacant belt. This time I think whoever won between Magsayo and Figueroa will face another fighter for the vacant title.
That is how I understand the situation will be.