Diaz will start at catcher and bat eighth in Monday's game versus the White Sox.
Diaz is earning a second start in a row after homering in Sunday's win over the Angels. It's the first time since Danny Jansen returned from the injured list last week that either he or Diaz has started two straight tilts. Logan O'Hoppe is also on the Rangers' active roster, and the club could continue to rotate the three players in the catcher spot.