Diaz (back) will start at shortstop and bat seventh for Saturday's game against the Rangers, Hazel Mae of Sportsnet.ca reports.
Diaz was expected to return to the lineup Friday, but manager John Gibbons opted to give him an additional day of rest following Tuesday's back spasms. Yangervis Solarte will shift to third base and move Josh Donaldson back to DH for Saturday's game.