LeBron James might finally be succumbing to the aging curve on the basketball court, but the Los Angeles Lakers star remains at the top of his game off it.

According to Sportico's Kurt Badenhousen, James was the highest-paid athlete in the world over the past year, netting a cool $127 million. Endorsements represented the vast majority ($90 million) of that figure.

Paris Saint-Germain soccer star Lionel Messi was next on the list at $122 million.

Heading west to Los Angeles has been greatly beneficial to James' bottom line. 

In June 2018, when he was only weeks away from signing with the Lakers, James was the sixth-highest earner ($85.5 million) for the previous year, per Forbes. By 2019, he had slipped to eighth but boosted his earnings to $89 million.

The fact that James' endorsement money has climbed from $53 million in 2019 shows the impact of playing in one of the world's biggest media markets.

That's part of a larger trend as well. It pays—quite literally—to excel in the NBA.

Basketball accounted for the highest number (36) of athletes on the top 100 list. In terms of U.S.-based leagues. James, Stephen Curry, Kevin Durant and James Harden all ranked ahead of the highest NFL player, Matthew Stafford (No. 11), and you had to get to No. 24 before finding the first MLB star, Mike Trout.

Per Badenhausen, Jacksonville Jaguars quarterback Trevor Lawrence (22) and golfer Phil Mickelson (51) were the youngest and oldest athletes, respectively, to make the cut.

Naomi Osaka and Serena Williams were the only female athletes in the top 100, illustrating the wide financial inequities between men's and women's sports.