Triple-A El Paso placed Diaz on its 7-day injured list Monday. The nature of Diaz's injury isn't known, but he'll be on the shelf for at least the next week while tending to the matter. Since being demoted by the Padres on June 15, Diaz made four appearances for El Paso, giving up two runs in 7.2 innings.
Diaz was optioned to Triple-A El Paso on Saturday. Diaz spent 10 days on the roster after missing a large portion of the season due to a torn meniscus. He allowed five runs in 6.1 innings of work. Phil Maton was recalled to take his place in the bullpen.
Diaz (knee) was activated from the 60-day injured list Wednesday. Diaz has been sidelined all season while recovering from a torn meniscus, but he's ready to make his 2019 big-league debut after completing a six-game rehab assignment with Double-A Amarillo during which he compiled a 4.37 ERA and 33:8 K:BB in 22.2 innings. Brad Wieck was optioned to the minors while Alex Dickerson was designated for assignment in a pair of corresponding moves.
Diaz (knee) was transferred to the 60-day injured list Wednesday. This move frees up a spot on the team's 40-man roster for Cal Quantrill, whose contract was purchased from Triple-A El Paso ahead of his scheduled start Wednesday. Diaz has been sidelined all season while recovering from a torn meniscus in his right knee, and now the 24-year-old won't be eligible to return until the end of May.
Diaz will require further testing on his injured right knee, Kevin Acee of The San Diego Union-Tribune reports. The right-hander left Saturday's bullpen session due to what appeared to be a leg injury, but there is now more swelling in the knee area than before. Diaz will undergo more tests to determine the severity of the issue soon.