I couldn't find anything for this season, but Baker Mayfield had 165 passing yards versus the Cowboys in 2020.

baker mayfield passing vs cowboys this year
NAMESEASONTMGPYDSCMPATTPCTAVGYDS/GTDTD%INTINT%SCKSCKYRATE
Baker MayfieldBaker Mayfield2020CLECLE1165193063.35.5165.026.700.021100.0
StatMuse has game-level data for passing yards going back to the 1950 season.