Mildred Whittier still has not made it to the inside of a courtroom. It has been four years since she filed a lawsuit against the NCAA on behalf of her trailblazing brother, who battles dementia almost five decades after he became the first black football letterman in Texas Longhorns history.

Still, she waits.

Zack Langston’s family is waiting, too. In 2014, the former Pittsburg State linebacker committed suicide at 26, leaving behind instructions to have his brain studied for evidence of chronic traumatic encephalopathy, or CTE. Now, his case against the NCAA has been folded into a class-action lawsuit potentially involving thousands of former players.

For all of those families, a resolution could be years away.

But a week from Monday, Debra Hardin-Ploetz will not have to wait anymore. On June 11, she is scheduled to appear in a Dallas courtroom, where her attorneys will argue that the NCAA is legally responsible for her husband’s death.

It will be the first time a CTE case ever has gone to trial in this country. And for the NCAA, it will mark the beginning of what could be a momentous stretch of legal tumult that could leave a lasting effect on the governing body whose original stated mission is “to keep college athletes safe.”

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Later this year, the NCAA will have to defend its limits on compensation for student-athletes in a trial set for a California courtroom. That case, legal experts say, has the potential to upend the entire concept of amateurism in college sports.

But in many ways, the CTE trial in Dallas could wind up being just as significant. That case revolves around Greg Ploetz, who played football at UT in 1968, 1969 and 1971, and died in 2015.

According a clinical report cited in his wife’s lawsuit, Ploetz suffered a myriad of serious health problems throughout his life, and “became apathetic, disinhibited, exhibited compulsive behaviors, and his personal hygiene began to decline. He experienced paranoia and confusion, was psychiatrically hospitalized, and was in and out of respite homes due to aggressive behaviors.”

Neurologists at Boston University, who studied Ploetz’s brain after his death, concluded he suffered from stage IV CTE, the most severe version of the disease. Those same researchers recently published a study stating CTE was found in 99 percent of brains obtained from NFL players, 91 percent of college football players and 21 percent of high school football players.

With that link in mind, the most important question to be settled in the Ploetz trial is this:

To what extent should the NCAA be held responsible for protecting athletes?

When the jury provides its answer, the effect could be huge. In an interview with The Brookings Institution, Donna Lopiano, the former UT women’s athletic director and former CEO of the Women’s Sports Foundation, estimated that the NCAA could face “at least a billion dollars in concussion liability.”

To win her case, Hardin-Ploetz — who is represented by Houston attorney Eugene Egdorf — will need to prove the NCAA was negligent.

Michael McCann, a legal analyst for Sports Illustrated, broke down the keys to proving that argument like this:

“Hardin-Ploetz insists that, 1. the NCAA openly acknowledged a legal duty to minimize the risk of injury to Ploetz while he played college football; 2. Ploetz relied on the NCAA to satisfy this duty; and 3. the NCAA failed to meet the duty.”

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The NCAA, of course, is likely to argue that college football players assume the risk of injury by voluntarily playing a physical sport, and that the governing body had no duty to protect players as extensively as the Ploetz lawsuit suggests.

But Egdorf will have plenty of evidence to suggest otherwise. According to Sports Illustrated, Hardin-Ploetz’s lawsuit cites a 1933 NCAA medical handbook recommending that concussed players be held out for 48 hours, which could suggest that the NCAA should have required safety measures even during Ploetz’s career.

The plaintiff also could bring up NCAA president Mark Emmert’s 2014 testimony before the U.S. Senate, when he said, “I will unequivocally state we have a clear moral obligation to make sure we do everything we can to protect and support student-athletes.”

Hundreds of families, from the Whittiers to the Langstons to all of those filling the class-action suits still pending, believe the NCAA did not meet that obligation. Many of them have been waiting a long time to make that argument.

In just a few days, they finally will get to hear someone make it for them.

mfinger@express-news.net

Twitter: @mikefinger