Standing together in the same locker room, Chiefs guard Trey Smith and running back Kenneth Walker III represent something far bigger than one explosive run or one Sunday win.
Smith was grinning at Allegiant Stadium after Walker ripped off a 76-yard gain in Kansas City’s 30-27 victory over the Las Vegas Raiders, and his reaction said plenty. Asked what made the play possible, Smith didn’t hesitate.
“Because Kenneth Walker is special …” Smith told The Star. “It’s an honor to block for him.”
What makes that answer hit even harder is what the two players have already survived away from the field. Smith and Walker each dealt with blood clots in both lungs, episodes serious enough to threaten their careers and, in the wrong circumstances, their lives.
Smith has been open about that fight before, and Walker’s own path came up again after the Chiefs signed him in the offseason. Once Smith learned what Walker had gone through, the subject became part of their relationship right away.
“Going through circumstances, situations like that, it’s serious,” Smith said last week. “And having the same exact symptoms, same feelings, it’s just like, ‘Damn, someone else has been through that same physical issue.’”
That kind of honesty is exactly what caught the attention of National Blood Clot Alliance president and board chair Leslie Lake.
As she watched a video of Smith speaking last week, Lake said, “That made me cry.”
Lake, who became a volunteer after suffering blood clots herself in 2018, has long viewed Smith as an important voice for awareness. Now Walker has joined him, giving the cause two elite athletes with firsthand experience.
“Here you have two unbelievably elite athletes talking about something that has happened to them that can kill you,” Lake said in a phone interview with The Star on Wednesday.
Smith’s connection to the NBCA goes back to 2022, when Lake said he reached out to highlight the organization through the NFL’s “My Cause My Cleats” campaign. For Lake, that was a turning point.
She pointed to Serena Williams making her pulmonary embolism public in 2011, but said it had still been rare for prominent figures to speak so openly about blood clots.
That matters because the condition remains widespread. According to the Centers for Disease Control, nearly a million Americans suffer from blood clots each year, and an estimated 60,000 to 100,000 die.
Smith, Lake said, “really came out of the dark.”
“Nobody has wanted to talk about this the way that he has,” Lake said. “Nobody.”
The message behind that openness is simple: people need to know they are not alone, and they need to recognize the danger early. Lake said many people who deal with deep-vein thrombosis and pulmonary embolisms go on to live normal lives, and Smith and Walker are proof of that.
Their stories are now part of the NBCA’s “Stop The Clot, Spread The Word” effort, which Lake said can reach up to 200 million people.
Before the Chiefs’ Sept. 14 season opener against Denver, the NBCA posted this message on social media:
“TWO PLAYERS. TWO SURVIVORS.
BLOOD CLOTS CAN HAPPEN TO ANYONE.
EVEN YOUNG, ELITE ATHLETES.”
Other athletes have dealt with blood clots as well, including Nelly Korda and San Antonio Spurs star Victor Wembanyama.
Smith’s and Walker’s experiences each unfolded differently, one during college at Tennessee and the other in high school in Tennessee, and the details aren’t the same. But the larger point is shared: the condition can strike anyone, and surviving it takes urgency, treatment and education.
Lake said that education is the key first step. Symptoms and causes need to be better understood, because blood clots are not always preventable, but they can sometimes be caught in time.
She also stressed the importance of recognizing the signs quickly, noting that doing so can help stop a DVT in the calf “from becoming the PE on your lungs … that has the ability to kill you.”
And for those who make it through, learning how to manage the condition can help them get back to their lives, even if adjustments are necessary.
The stakes remain enormous. The NBCA says someone dies from a blood clot every 6 minutes, a rate it says is higher than breast cancer, automobile accidents and HIV/AIDS combined.
Lake said part of the problem is a lack of awareness and engagement. There is, she said, “actually zero federal funding for this. Zero,” adding that a previous CDC Division of Blood Disorders was eliminated in April 2025.
State-level efforts are helping, but Lake sees a major gap where federal support should be. That is why Smith and Walker speaking publicly matters so much to her.
“I can’t even impress upon you,” she said, “how many lives this will save.”
Smith sees it the same way.
“Blood clots can be lethal; it’s a serious matter,” Smith said. “It’s sort of a weird commonality that we have where we both sort of experienced it, we both felt the same way. And then having lived through that, having a little bit of a commonality there, as well.”
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Chiefs Stadium Vote Could Cost Wyandotte County More Control
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The amended language would loosen several protections that were originally intended to give Wyandotte County a say in how the money is used and how the project evolves. It would also reshape local oversight of the stadium process in ways county officials have previously treated as important, leaving one of the biggest questions in the financing arrangement centered on how much influence the county will still have once the vote is complete. [Read more 🡒]