In the end, it will be Deshaun.
The first-rounder becomes the ninth quarterback to start under O'Brien since 2014, the most by any NFL team during that span.
The decision comes as little surprise after Palmer reported that Watson took every snap with the first-string offensive line during the walkthrough portion of Tuesday's practice.
The rookie also came out of the loss with an ankle injury, but Watson was upgraded to a "full" participant in Tuesday's practice.
With Houston's offensive line looking ultra-shaky in the opener, Watson's quick feet and ability to extend plays give the Texans more of a shot, in theory, to keep the offense moving.
It's on O'Brien now to give his young passer adequate time to grow before making another quick switch under center.