Ordinarily in a Sprint, the soft-compound rear tyre is the only choice worth considering, but that's not the case today.
Such is the degradation being experienced this weekend, a number of riders provisionally on the medium-compound rear tyre for the Sprint.
These include Marc Marquez, Fabio Di Giannantonio, Jack Miller, and Miguel Oliveira.
Quartararo also down as having a medium rear tyre, but he just told the international TV feed that he's going to run the soft. Plenty of time for the others to change, too, with eight minutes still before the start.