Former Giant and two-time Cy Young Award winner Tim Lincecum's second comeback bid is in full swing.

Driveline Baseball, the Seattle-area facility where Lincecum has been training and gaining bulk, tweeted Tuesday that the 33-year-old pitcher will throw for scouts and team officials in a showcase there on Feb. 15.

Invitations were sent to teams Tuesday. The public and press are not invited.

With an unusual, whip-like delivery that he learned from his father, the slight-of-build pitcher was a key to the Giants' turnaround nearly 10 years ago that propelled them into their championship era. For four seasons, 2008-11, Lincecum was among the best pitchers in baseball.

He pitched the Giants to several key wins in the 2010 postseason, including the World Series clincher in Texas.

Lincecum's decline was just as rapid, and the Giants finally parted with Lincecum after the 2015 season.

After hip surgery, Lincecum attempted a comeback with the Angels in 2016 after they saw him in a similar showcase in Scottsdale, Ariz. The revival ended after nine mostly forgettable starts that yielded a 9.16 ERA

In December, fellow Driveline client Adam Ottavino, a Colorado Rockies pitcher, posted an Instagram photo of Lincecum wearing a muscle shirt and revealing a built upper body. He is rumored to be throwing at 95 mph.

Henry Schulman is a San Francisco Chronicle staff writer. Email: hschulman@sfchronicle.com Twitter: @hankschulman