Diaz went 2-for-3 with a two-run home run and a walk Saturday in a 6-2 victory versus the White Sox.
The Padres selected Diaz's contract from Triple-A El Paso on Sunday.
The Rockies released Diaz on Friday.
Diaz is out of the lineup for Wednesday's game against the Diamondbacks.
Diaz is out of the lineup for Sunday's game against Atlanta.
Diaz is out of the lineup for Thursday's game against the Mets.
Diaz went 2-for-4 with a double, two RBI and a run scored Tuesday against the Mets.
Diaz is out of the lineup for Sunday's game against the Padres.
Diaz isn't in the Rockies' lineup Thursday versus the Angels.
Diaz is absent from the lineup for Wednesday's contest against the Red Sox.