sentences:  However, the striker was unable to find his place there, losing three successive fights to grapplers, and in 2005 he returned to the Muay Thai and kickboxing worlds.Leko returned to the stand-up fighting world in early 2005, becoming the WKN World Super-Heavyweight champion.Prior to his hiatus from standup fighting, he had joined Team Golden Glory, a Dutch fight camp known for such fighters as Semmy Schilt, Alistair Overeem and Sergei Kharitonov.