SAN FRANCISCO -- A few hours before the Giants named Farhan Zaidi their new president of baseball operations, assistant general manager Jeremy Shelley stood in the lobby of the Omni Resort in Carlsbad and looked down at a notecard full of names. He had been asked about the large collection of Giants who finished the season on crutches or in slings.

"No red flags," he said.

Zaidi's first order of business will be to build depth for a team that was crushed by injuries in 2018. That effort will be helped by the fact that all of the rehabbing Giants appear to be doing well. They're all on schedule, or in some cases, a little ahead.

It starts with catcher Buster Posey, of course. He's off his crutches and walking normally two and a half months after major hip surgery. Posey has been rehabbing five days per week in the Bay Area, and remains on pace to start baseball work in January.

Shelley said Posey "definitely" will be ready for activity in spring training, as the Giants had anticipated all along.

When Posey shows up in Scottsdale, he'll at some point run into Johnny Cueto. The right-hander is back in the Dominican Republic right now after months of rehab work in Arizona. He'll continue physical therapy at his offseason home and return to Scottsdale in February to begin a throwing program. There's still a chance that Cueto, who had Tommy John surgery, can return for a few starts at the end of next season.

First baseman Brandon Belt, who had a knee cleanup, is off his crutches and doing well. Steven Duggar (shoulder surgery), the likely Opening Day center fielder, just finished his rehab work in Arizona. He'll return to be checked later this month and then start a hitting program the first week of January. Austin Slater went down the last week of the season with an elbow sprain, but the young outfielder has started a throwing program and also is on schedule.

Finally, there's a player who never made it back to the big leagues after a concussion. Shelley said Mac Williamson was cleared of symptoms in September and has had a normal offseason.

"He should be on schedule to compete for a job in spring training," Shelley said.

Williamson is out of options, so next spring is a big one for a player who looked headed for a breakout before he went down.