Marileidy Paulino held off a strong challenge from Sada Williams to win the 400m at the Athletissima Diamond League meeting in Lausanne, Switzerland on Friday.

Paulino took control of the race from the 200m mark with Williams not far behind and closing steadily. Paulino managed to hold the lead down the home stretch even though the Commonwealth Games champion was closing with every stride.

The World Championship silver medallist subsequently crossed the line first in 49.87, just ahead of Williams who clocked 49.94.

Paulino’s compatriot Fiordaliza Cofil overtook a fading Candice McLeod to finish third in a personal best 50.13. McLeod was fourth in 50.80.

Earlier, Puerto Rico’s Jasmine Camacho-Quinn ran a meet record 12.34 to win the 100m hurdles ahead of world champion and world-record holder Tobi Amusan, who clocked 12.45 for second place. Tia Jones of the USA was third in a personal best of 12.47.

Meanwhile, Shanieka Ricketts finished second in the women’s triple jump with 14.64m. As expected, Venezuela’s Yulimar Rojas won with another big performance leaping out to 15.31m.

Ukraine’s Maryna Bekh-Romanchuk was third with 14.31m.

The USA’s Noah Lyles won the 200m in 19.56 ahead of compatriot Michael Norman (19.76) with Trinidad and Tobago’s Jereem Richards finishing third in 19.95.