CardinalsHall of FamerLou Brockwas recently diagnosed with the bone cancer and has been undergoing treatment in St. Louis, the team announced Thursday.
Brock, 77, was forced to cancelhis April 25Budweiser Bash appearance at Busch Stadium to undergo blood treatment for Multiple Myeloma.
"I am disappointed that I won't be able to make the event," Brock said in a team release. "Jackie and I appreciate the prayers and support we have received from our many friends and fans in the Cardinals community. We count ourselves blessed that I am receiving the best possible medical treatment and we look forward to seeing many more Cardinals World Series Championships in the future."
A six-time All-Star, Brock spent 16 seasons with the Cardinals batting .297/.347/.414 and helping the Redbirds to two World Series titles. Brock led the National League in stolen bases for eight seasons, including four straight from 1966-69 and again from 1971-74.
Brock's NL records of 938 career steals and 118 in a single season, paired with 3,023 career hits, earned him a Hall of Fame enshrinement in1985.
Brock began his career with the rival Cubs in 1961 before being traded to the Cardinals in 1964.
An infection in 2015 necessitated the amputation of Brock's left leg just below the knee.