San Francisco Giants announcer Duane Kuiper revealed he has been diagnosed with throat cancer and started treatment at Stanford Medicine, his second cancer fight in five years, arriving just days before his broadcast partner of 36 years calls his final game.
Kuiper, 76, made the announcement Sunday in a public statement. He said the new diagnosis is unrelated to the cancer that sidelined him in 2021, when he missed most of that season while undergoing chemotherapy. He called himself optimistic about the outcome and said his doctors at Stanford Medicine are already treating him.
The timing adds a painful layer to what was already an emotional stretch for the Giants broadcast booth. Mike Krukow, Kuiper's on-air partner since the late 1980s, is set to retire on September 27 after a two-decade fight with a rare degenerative muscle disease that has progressively limited his ability to travel and work a full schedule. Kuiper said he plans to be back behind the microphone in time for Krukow's farewell.
In his statement, Kuiper laid out both the diagnosis and his near-term schedule:
"I was recently diagnosed with throat cancer and began treatment last week with my doctors at Stanford Medicine. This cancer is unrelated to the one I experienced five years ago, and I'm optimistic that it will be successfully treated."
He acknowledged he would miss Sunday's and Wednesday's broadcasts to continue treatment but expressed determination to get back to work quickly.
"I'll miss the broadcasts tomorrow and Wednesday as I continue treatment, but I'm looking forward to returning Tuesday and this weekend to celebrate my partner, Mike Krukow, and his remarkable career as he calls his final game before retirement."
Kuiper also thanked his family, the Giants organization, and his broadcast colleagues for their support. He did not disclose the specific type of treatment he is receiving, whether radiation, surgery, or another round of chemotherapy, and the Giants organization has not publicly added details beyond his personal statement.
Cancer battles among public figures have drawn wide attention in recent months. Tulsi Gabbard recently gave a hopeful update on her husband's fight with a rare bone cancer, a reminder that these diagnoses cut across every walk of life.
Kuiper and Krukow have shared the Giants booth for 36 years, one of the longest-running broadcast partnerships in Major League Baseball. Both men built their bond on the field first. Kuiper, a native of Racine, Wisconsin, spent eight seasons as an infielder with the Cleveland Indians before finishing his playing career in San Francisco. Krukow, a right-handed pitcher, compiled a 124, 117 record across 14 MLB seasons, with his final seven in a Giants uniform. His best year came in 1986, when he won 20 games and earned a spot on the National League All-Star team.
Their transition from players to broadcasters turned them into the soundtrack of Giants baseball for a generation of fans. But health has tested the partnership repeatedly. Krukow, now 74, has spent roughly two decades battling a degenerative muscle disease that the information provided does not name. The condition has gradually reduced his mobility and forced the Giants to limit his travel schedule. The New York Post reported that Kuiper's 2021 cancer and chemotherapy kept him away from the booth for much of that season, a stretch that gave fans an early taste of what the broadcast would sound like without one half of the duo.
Now, with Krukow stepping away for good, Kuiper faces his own medical fight at the very moment he is losing the partner who defined his professional life.
Giants President and CEO Larry Baer issued a statement last month acknowledging the weight of Krukow's departure. He did not sugarcoat it.
"While we knew this day would eventually come, Mike Krukow stepping away from the broadcast booth is a deeply emotional moment for our Giants family."
Baer went further, describing Krukow's contribution as something beyond play-by-play work.
"On behalf of our extended Giants family, I want to express our profound gratitude for everything Kruk has given, not only to this franchise, but to each of us personally. For decades, he has shared far more than his voice. He has been our spiritual leader."
That language, "spiritual leader", is not the kind of corporate boilerplate teams typically roll out for a retiring broadcaster. It reflects the unusual place Krukow and Kuiper have occupied in the organization: not just employees, but figures whose voices became inseparable from the franchise itself.
The losses have not been limited to the Giants booth. Greg Papa, the longtime San Francisco 49ers announcer, is currently awaiting a heart transplant, another blow to the Bay Area's tight-knit sports broadcasting community. The recent death of Chris Anne Affleck after a pancreatic cancer battle is another reminder of how swiftly these diagnoses can reshape families and communities.
Kuiper's statement was carefully worded. He expressed optimism but offered no clinical detail about the stage of his cancer, the treatment protocol, or the expected timeline. He said only that his doctors at Stanford Medicine are handling his care and that the throat cancer is unrelated to whatever he fought in 2021.
The nature of his earlier cancer has not been publicly disclosed either. What is known is that it required chemotherapy and cost him most of a season in the booth, a significant absence for a man whose daily presence on the air had been one of the most reliable constants in San Francisco sports.
Whether Kuiper can maintain a broadcast schedule while undergoing treatment remains an open question. His stated plan, missing two games, returning Tuesday, and working through the weekend to be present for Krukow's final game, suggests he believes the treatment will not immediately sideline him for an extended stretch. But throat cancer treatment often involves radiation or surgery that can affect the voice, and Kuiper's voice is his livelihood.
For now, the 76-year-old broadcaster is focused on showing up one more time for the man who sat beside him for nearly four decades. That is the kind of loyalty fans understand, and it is the kind of loyalty that earns the word "beloved" without anyone needing to argue the point.
Giants fans have watched Kuiper fight cancer before and come back. They will be pulling for him to do it again, and this time, with his partner heading home, the stakes feel even higher.
