The San Diego catcher said it was precautionary, and Black affirmed the notion.
"Sore side for Nick, a couple days off," the skipper said. "He should be OK."
Last season, Hundley was placed on the disabled list with a strained right oblique, and he missed more than a month. Black wasn't about to piece the two together.
"Let's go old school and [call it] side," Black said. "I'm not a doctor."
Right fielder Carlos Quentin and second baseman Orlando Hudson were also out for a second straight day with minor injuries. Quentin is battling a sore right knee and Hudson has a slight groin strain.