before making his international debut as an assistant referee for FIFA just two years later. Today he holds the accolade of best assistant referee in the Kenyan Premier League and his talent has taken him to sun-kissed shores of South America for the 2014 World Cup, where he has been performing as a reserve assistant referee. The 37-year-old knows this will be the biggest test of his career so far and is prepared to have the eyes of millions of football fans scrutinizing his every decision. Referees have to make decisions in the shortest time possible. I see it once but you, on TV, will see it and see a replay and you can even pause with technology and even review, he says. As a referee I only have one angle to look at that... so the challenge that we have as referees, the biggest one, is how to place yourself at the right position and the right moment to make that very important, crucial decision. Check out the video below to find out how Marwa prepared for his greatest moment to date and earned his dream job officiating at this year's World Cup.