For time being, Raiders move ahead without Khalil Mack

Getty Images Defensive end Khalil Mack was not present Tuesday because of a contract holdout when the Raiders opened a three-day mandatory minicamp. Get Raiders news in your inbox. Sign up now for the free Raiders HQ newsletter.

ALAMEDA — When the Raiders took the field for their first team session Tuesday at their mandatory mini-camp, Tank Carradine lined up as the starting left end.

That made it official. Khalil Mack is a holdout.

It’s likely to continue through the rest of the camp, perhaps even to training camp, although coach Jon Gruden is hoping that’s not the case.

“One of the big reasons I came here is to coach that man,” Gruden said. “But I don’t want to speculate. There’s a lot of…