 Although Woronin's official timing read as 10.00 seconds, this was rounded up from 9.992 seconds – some claim this represents the first time that a Caucasian (and a European) broke the 10-second barrier in this event.He is one of only ten individuals not of West African descent to run 100 metres in 10.00 s or less – the others being Koji Ito of Japan (10.00 in 1998), Australian Patrick Johnson (9.93 in 2003), Namibian Frankie Fredericks (9.95 in 1991), Zimbabwean Ngonidzashe Makusha (9.97 in 2011) Frenchman Christophe Lemaitre (9.92 in 2011), who is the first person of European descent to officially break the barrier, Zhang Peimeng (10.00 in 2013) and Su Bingtian (9.99 in 2015), both of China, British Adam Gemili of Iranian and Moroccan descent (9.97 in 2015) and American John Teeters (10.00 in 2016).Woronin's personal best in the 200 m was 20.49.