The news of Wieland's impending move to the disabled list became apparent on Wednesday afternoon. Wieland, 22, is 0-4 with a 4.55 ERA in his first five Major League starts. San Diego manager Bud Black is hopeful that Wieland will be able to return in "two to three weeks."
Wieland becomes the 11th Padre to go on the disabled list since March 26.
Darnell was hitting .267 with seven home runs and 21 RBIs with Triple-A Tucson while playing left field and third base, though he was seeing more time in left field, Black said.
"He was swinging the bat well," Black said of Darnell's time in Tucson. "And this gets us back to a five-man bench."