He was feeling sick for most of the week and suffering from headaches, so the medical staff held him out for precautionary reasons. McNeal initially suffered a concussion earlier this month, in a game against Utah. He said Tuesday that he also suffered a concussion against Colorado, the week before Arizona.
"They thought it was related," McNeal said.
McNeal did watch the Trojans' loss to the Wildcats -- "every single second of it," he said -- at home.
"I'm so used to being in meetings, it was weird being back at home," he said. "It was rough, especially when you have a lead and you give it up.
"Arizona's a good team, but we should've never lost."
He said he's feeling fine now and fully expects to play Saturday against Oregon, although he was wearing a yellow jersey at the conclusion of practice Tuesday.
Yellow jerseys are typically given to players who need to avoid being hit in practice.
Left tackle Aundrey Walker, who also did not make the trip to Arizona after suffering a neck injury against Colorado, was also wearing yellow Tuesday.