About Oussama Mellouli Oussama "Ous" Mellouli (Arabic: أسامة الملولي‎; born February 16, 1984) is a Tunisian swimmer who competes in the freestyle and medley events. He currently is an African Record holder, and trains with the USA club based at the University of Southern California, where he went to school and swam, collegiately. Oussama Mellouli became the 1500 m freestyle World champion at the 2009 World Aquatics Championships with a winning time of 14'37"28, second best performance of all times. Mellouli is the gold medalist in the 1500 freestyle at the 2008 Olympics. Mellouli tested positive in a 2006 drug test, after which his performances in the 2007 World Championships were nullified.