QB Jimmy Garoppolo allegedly had foot surgery after signing with the Raiders, but he could still start Week 1.

With organized team activities started, the Las Vegas Raiders are missing one essential member on the field: Jimmy Garoppolo.

According to The Athletic's Tashan Reed and Vic Tafur, the recently acquired quarterback underwent foot surgery in March after leaving the San Francisco 49ers and signing with his new squad.

Garoppolo, 31, allegedly arrived at the Raiders' club offices on March 16 with preparations to sign his deal. He didn't sign till the next day. 

According to the article, the delay was caused by his physical. The two-time Super Bowl champion broke his foot in December during a win over the Miami Dolphins.

Doctors for the Niners determined that Garoppolo would not require surgery and would only require two months of rest.

Raiders doctors apparently believed otherwise and advised the operation, which Garoppolo performed after being announced as a Raider.

While there is no defined rehabilitation schedule, head coach Josh McDaniels expressed no anxiety about it.

McDaniels indicated Thursday that Garoppolo may be held out until July, when training camp begins.Garoppolo has a long history of injuries, which the Raiders must now manage with caution.