LeBron James, Kyrie Irving, Kevin Durant Top 2017 Signature Shoe Sales

Nike enjoyed a dominant year in 2017 in signature shoe sales, taking the top three spots, with Cleveland Cavaliers star LeBron James leading the way.

According to Kurt Badenhausen of Forbes, Boston Celtics guard Kyrie Irving finished second, and Golden State Warriors forward Kevin Durant finished third. They helped give Nike a 73.5 percent share of the performance basketball market.

Warriors guard Stephen Curry was fourth as a representative of Under Armour, while Michael Jordan and his Nike-owned Jordan Brand came in fifth.

Per Badenhausen, Matt Powell of NPD Group said performance basketball sales fell by 13.6 percent overall last year.

Under Armour was especially impacted, as its market share fell from 17.2 percent in 2016 to 12.1 percent in 2017.

Powell added that the only player in the top five to increase sales from 2016 to 2017 was Irving, and he explained the possible reasoning behind that: "Irving moving out from under the shadow of LeBron has raised his personal star. He's also still new enough with the signature shoe that fans are coming out and buying."

Kyrie asked for a trade following the 2016-17 season, and Cleveland sent him to Boston in a deal that netted the Cavs Isaiah Thomas, Jae Crowder, Ante Zizic, a first-round pick and a second-round pick.

Although Irving is out for the remainder of the 2017-18 campaign, the Celtics are still alive in the playoffs, as are the Cavaliers and Warriors, which suggests on-court success helps drive shoe sales.

In contrast with the performance basketball market, the retro market has remained steady, as it netted three times more than performance in 2017 at $3 billion.

Nike essentially has the retro market cornered since Jordan (65 percent) and Nike (23 percent) combined for a market share of 88 percent in 2017.