Asked if it was related to COVID-19, Tingler said: "I cannot get into it. I wish I could give you details, I can't. All I'll say is it's a medical condition."
The Padres did not specify if it was the 10-day injured list.
Paddack (1-3, 5.40 ERA) last pitched on Tuesday at Arizona, taking a 5-1 loss after giving up five runs, three earned, and six hits in 5⅓ innings.