Rubuta ci gaba don wannan sakin layi - Petersen ya kafa tarihinsa na iyo a gasar tseren ruwa ta Pan Pacific na 1999 a Sydney, inda ya zama na huɗu a tseren tseren mita 100, kawai karamin yanki a waje da podium. A waccan shekarar, Petersen ya ba da lambar zinare ga Afirka ta Kudu a tseren mita 100 (1:02.63) a Wasannin Afirka
a birnin Johannesburg.