Grass vs. Turf: Following a rash of injuries in recent years, NFL players have repeatedly spoken out about the playing surface used in about half the league's games in place of grass – artificial turf. But amidst all the acrimony and angst at the NFL level, little is being said about the health of high school football players, who play on artificial turf fields across the country. "Real Sports" examines high school football injuries, and whether they are caused by the ground beneath. Correspondent Andrea Kremer reports. Producer: Jake Rosenwasser. 

Zion Clark: Zion Clark has overcome odds most of his opponents couldn't imagine.  Abandonedat birth after being born without legs due to a rare disorder, Clark moved from foster home to foster home where he says he suffered abuse and neglect which sent him spiraling. He found wrestling in high school, and has spent the last five years training to be a professional MMA fighter, notching a victory in his first fight last year. Correspondent David Scott reports. Producer: Katie Melone.

Stuntpeople: Stunt performers in blockbuster action movies do everything from fly through the air with acrobatic grace to flipping cars at high rates of speed. It's not surprising many were elite athletes in their previous lives, including college gymnasts, black belts in martial arts, or race car drivers. It can be a grueling life full of long hours, danger and broken bones, but for those who hung up their pro athlete dreams for stunt work, most say they have no regrets as they now get to spend their days in show business, turning sport into art. Correspondent Jon Frankel reports. Producer: Jordan Kronick.

Brad Daugherty: Retired NBA legend Brad Daugherty never won an NBA title, so he took a route to a championship through a very different sport: NASCAR. In February, Daugherty, now the owner of a racing team, won the most important race in American motorsports – the Daytona 500 – and in doing so made NASCAR history, becoming the first Black owner to capture the circuit's top prize. Correspondent Jonathan Jones reports. Producer: Evan Burgos.

Iranian Athletes: Iranian athletes have been among the most high-profile protesters calling for regime change in their home country, consequently putting targets on their backs as the government views them as a threat to stability. As several athletes and families have told "Real Sports," the regime's crackdown has been brutal: imprisoning many, torturing others, and even executing those they deem the biggest threats. Correspondent David Scott reports. Producer: Nisreen Habbal.

Special Olympics - Triathlon Edition: There's a group of Special Olympics athletes in Florida who are using their triathlon training to change their lives. Led by Chris Nikic, the first person with Down Syndrome to complete an Ironman, this group of young adults is breaking down physical barriers and social stigmas to achieve athletic feats that many thought impossible. Correspondent Mary Carillo reports. Producer: Beret Remak.

Victor Vescovo (Update): In the wake of the OceanGate Titan submersible tragedy, "Real Sports" checks in with Victor Vescovo, an explorer who had built his own deep-sea submersible in 2018. Vescovo, who lost two friends in the accident, believes the tragedy was avoidable and that early warning signs about safety were ignored. Correspondent Bryant Gumbel reports. Producers: Nisreen Habbal, Daniel Litke.