The four-time NBA MVP introduced Clinton on Sunday at a rally in Cleveland alongside teammate J.R. Smith. CNN provided video of the short message:
Clinton returned the favor by praising James' work off the court, via ABC News:
James formally endorsed the former Secretary of State last month in an op-ed on Business Insider.
"Only one person running truly understands the struggles of an Akron child born into poverty," James said. "And when I think about the kinds of policies and ideas the kids in my foundation need from our government, the choice is clear. That candidate is Hillary Clinton."
The superstar added, "I support Hillary because she will build on the legacy of my good friend, President Barack Obama."
Unlike many of his peers, James has not shied away from showcasing his political and personal views over the course of his 14-year NBA career. In 2014, he wore a shirt that read "I Can't Breathe" in response to the death of Eric Garner. During the 2016 ESPYs, he joined Carmelo Anthony, Chris Paul and Dwyane Wade in calling for an end to violence nationwide.
He also remains one of the most popular players in the sport.
James and Clinton are hoping the former's following in Ohio, a swing state, will make a difference and send 18 electoral votes to the Democrats on Nov. 8.