By Matthew Abbott Louis Rees-Zammit participated in the Kansas City Chiefs rookie minicamp on Saturday, practicing with the Super Bowl champions for the first time. Rees-Zammit, 23, signed a three-year contract with the Chiefs in late March after impressing as part of the International Player Pathway program. As such, the player did not hear his name called at the Six Nations but was recognized on stage during day three of the event alongside other IPPP participants. The former The Rugby Pod rugby star switched sports on the eve of the Six Nations and is preparing for his first preseason as an…