Wollaston, the American-based runner, crossed the finish line in 12.04 seconds, ahead of Skikyla Walcott of Simplex (12.14) and Jada Barker of Cougars (12.26).
However, Wollaston’s training partner, the highly-rated Khalifa St Fort, did not compete in the semi-finals despite having the fastest time in the first round (11.53 in heat two).
According to a report on C News last night, St Fort was suffering with a leg injury and hence opted out of the semis.
Other Winners (clubs in brackets) - Girls Under-20 javelin: Akidah Briggs (Toco Titans) 38.98 metres.
Boys Under-20 shot put: Isaiah Taylor (Abilene) 15.24m.
Girls Under-16 long jump: Safiya John (Kaizen Panthers) 5.48m.
Girls Under-18 long jump: Anya Akili (Kaizen Panthers) 5.32m.
Boys Under-16 discus: Christopher Crawford (Falcons) 43.31m.
Boys Under-18 discus: Clarence Hannibal (Falcons) 50.63m.
Girls Under-16 javelin: Safiya John 40.22m.
Girls Under-18 javelin: Asha James (Zenith) 42.90m.
Girls Under-16 100m hurdles: Rae-Ann Serville (Memphis Pioneers) 15.49 seconds.
Girls Under-18 100m hurdles: Anya Akili 14.62.
Girls Under-20 100m hurdles: Jeminise Parris (Memphis Pioneers) 14.19.
Boys Under-16 110m hurdles: Justin Guy (Kaizen Panthers) 15.39.
Boys Under-18 110m hurdles: Ako Hislop (Kaizen Panthers) 15.35.
Boys Under-20 110m hurdles: Jude Atwell (PAP) 14.95.
Girls Under-20 discus: Chel-