Badr Hari
He was the first person to beat Badr Hari in K-1 by first-round knockout, though it was later avenged by Hari. Leko holds notable wins over 3x K-1 World Grand Prix champion Remy Bonjasky, K-1 Heavyweight champion Badr Hari, world Muay Thai champion Mike Bernardo, 3x K-1 World Grand Prix champion Peter Aerts (x2), K-1 legend Ray Sefo, world Muay Thai champion Alexey Ignashov (x2), and K-1 Grand Prix finalist Francisco Filho.