Bob Jenkins opened up about his cancer diagnosis during an interview with IMS (Indianapolis Motor Speedway) President J. Douglas Boles on the speedway's official Youtube channel. He described that on Christmas night 2020, he awoke with a severe headache. He admitted himself to the Crawfordville Emergency Room, where he was given a CAT scan and the initial diagnosis of a stroke. After further MRI procedures, it was later concluded that Jenkins has two malignant tumors in his right temple. This revelation shocked fans as he admitted his cancer at the end of the 24-minute video interview. The Youtube comments section was instantly flooded with fan support and prayers.

Despite the tears in his eyes, Jenkins remained optimistic in his words. He stated, "I had colon cancer in 1983, and I survived that. And with God's help and my beloved race fans… I'm going to make it." Jenkins went on to explain that he is not going to completely retire. He will just be scaling back his involvement with the IMS.

Longtime race fans may remember Jenkins calling the 1992 Indy 500 duel between Al Unser Jr. and Scott Goodyear as a part of the IMS Radio Network. "The checkered flag is out, Goodyear makes a move, Little Al wins by just a few tenths of a second -- perhaps the closest finish in the history of the Indianapolis 500." Of course, Bob Jenkins was right on the money. Unser's victory margin was 0.043 seconds, and that remains the closest finish in the race's history.

Bob Jenkins was born and raised in Liberty. He graduated from Indiana University in 1969. After work as a radio news reporter, Jenkins became one of the first anchors on ESPN when the channel debuted in 1979. While working with other networks such as Spike TV and SPEED, he would always stay very involved with the IMS. His roles still include public address announcer and master of ceremonies, as well as being featured as a nostalgic staple for fans of the speedway.

When asked how he got his start in racing Jenkins said, "I've only been a racing fan, who got lucky -- and I think that's what I will have on my tombstone. Because it’s true. I was a race fan for many years until my career came about. I have the same passion for auto racing and especially the Indianapolis Motor Speedway that I had when I was growing up."

Jenkins retired from broadcasting after the 2012 IndyCar season. He took the time off to care for his wife, Pam, who also had been diagnosed with brain cancer. After her death in 2013, he would return to work as the speedway's primary public address announcer, as well as making brief appearances on television and radio. At the 2019 Indianapolis 500, Jenkins was inducted into Indianapolis Motor Speedway Museum's Hall of Fame.