We’ve seen a little bit of Saiyan vs Saiyan action in Dragon Ball Super episode 100 as Goku has taken on Caulifla and Kale.
However, the way it shows the warriors of the Saiyan race in the tournament, alludes to Super Saiyan Blue Goku as number 1.
The trailer asks who the number 1 Saiyan is and identifies Universe 6 Saiyan Caulifla as one with an infinite amount of hidden potential.
The Universe Survival Saga’s Tournament of Power in Dragon Ball Super is underway and warriors from the various universes are getting beat off the stage.