BRONCOS

Denver Broncos star undergoes surgery to remove cancerous tumor day after beating Las Vegas Raiders

Nov 10, 2025, 3:44 PM | Updated: Nov 11, 2025, 12:09 pm

One of the big reasons the Denver Broncos defense has been so dominant this season is their captain linebacker, Alex Singleton. The long-haired linebacker who wears number 49 for Denver made nine tackles against the Raiders on Thursday night, but then he was forced to tackle something even more frightening off the field on Friday.

Singleton underwent successful surgery Friday to remove a tumor that had tested positive for testicular cancer.

He was diagnosed with the cancerous tumor last Monday after the NFL Drug Testing program showed he had elevated hCG levels, or human chronic gonadotropin, which produces progesterone. Knowing he didn’t take anything external to cause the spike, he made an appointment with a urologist, Dr. Andrew Zilavy, who determined there were signs of a testicular tumor.

Singleton said he told his doctors he wanted to play in Thursday night’s game against the Las Vegas Raiders. He added that only a few of his teammates and Broncos officials and coaches knew of his diagnosis and impending surgery as the team went through its preparations last week.

Amazing Singleton says he will miss a few weeks but plans to return to the field before season’s end. Singleton didn’t want to put a timeline on his return other than he won’t play this Sunday against the Kansas City Chiefs.

Singleton said in his statement:

“I shared with my teammates and coaches this morning that I underwent successful surgery on Friday for testicular cancer after being diagnosed last week.

Thankfully, we believe the cancer was caught early with a great prognosis for me and my family. While we are still awaiting some additional tests, I fully expect to return to the field in the coming weeks.

A little over two weeks ago, following a random test as part of the NFL’s Drug Testing Program, I received a notice that I had elevated levels of the hormone hCG in my system.

Without a doubt, I knew with how diligent I am with what goes into my body that this was not from anything external I may have taken. After speaking with my agent and wife, we decided to book an appointment with a urologist.

On Monday, I visited Dr. Andrew Zilavy who determined that, in fact, I had signs of a testicular tumor. I immediately contacted the Broncos and they put me in contact with Dr. Geoff Ledgerwood, who was able to conduct an ultrasound to confirm the diagnosis.

And then Friday, after playing in the Raiders’ game the previous night, I underwent surgery to remove the cancerous tumor and begin the road to a full recovery.

I wrestled with sharing such personal information publicly. But the fact is, if it helps one person decide to pay closer attention to their body, then it is well worth it.

Early detection and regular screenings save lives and can save loved ones from a lot of grief. Heck, I have a wife, Sam, and daughter Tallyn, along with an amazing family back in California.

Not to mention, I’m a part of a great organization here with my Broncos family.

There are so many people I’d like to thank for their support and immediate action to help over these few weeks.

I’m sure I’ll miss someone but I want to thank: Dr. Zilavy and Dr. Ledgerwood.

Greg and Carrie Penner along with the entire Broncos organization. This includes VP of player health & performance Beau Lowery, Vince Garcia, Rich Hurtado and George Paton. Literally, within minutes of getting a call from my agent, this group arranged for me to get an ultrasound and other tests done to confirm the initial diagnosis.

Sean Payton and VJ (defensive coordinator Vance Joseph), who have been absolutely great and incredibly supportive.

My agent, Paul Sheehy, who has supported me and helped me navigate this situation.

And of course my wife Sam, who was with me every step of the way. She is truly the strongest person I know.

More than anything I really want to just thank everyone for their support and emphasize the importance of early detection and regular screenings.

Can’t wait to get back on the field.

GO BRONCOS!”

Broncos

Photo by Doug Pensinger/Getty Images...

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Denver Broncos star undergoes surgery to remove cancerous tumor day after beating Las Vegas Raiders