Athletics: Injury-free Tyson Gay wins 100m at New York leg of Diamond League series

NEW YORK (Reuters) - Former world champion Tyson Gay, free from injury at last, blitzed his rivals on Saturday to win the 100m sprint at the adidas Grand Prix.

Kenya's Olympic champion David Rudisha also outclassed his opponents to easily win the 800m at the New York leg of the Diamond League series.

Croatia's Blanka Vlasic, competing for the first time since 2011, won the women's high jump, while veteran Jamaican sprinter Veronica Campbell-Brown showed a clean pair of heels to win the women's 200m dash.

Despite running into a headwind on a cold and rainy day in Manhattan, Gay won the men's sprint in 10.02sec, well outside his season-best of 9.86 but still enough for a comfortable win.

"I'm happy with that," said the 31-year-old American, who has been plagued by injuries since winning the world title in 2007. "I didn't try to push myself too hard in these conditions."

Rudisha, who produced one of the greatest performances in middle-distance running when he broke his own world record to win gold at last year's London Olympics, also ran within himself to win the two-lap race at Randall's Island.

The 24-year-old clocked 1min 45.14sec to capture his second Diamond League title this month after winning in Doha two weeks ago.

"The time does not matter," he said. "It was cold and there was a strong wind down the back straight. It was very tough.

"The main target for me this year is the world championships."

Vlasic made a triumphant return to competition after a leg injury kept her sidelined for nearly two years, ruining her hopes of competing at the London Olympics.

The four-time world champion cleared each of the six heights she attempted, including a best of 1.94m.

Campbell-Brown, a two-time Olympic champion, won the women's 200 in 22.53sec, her best this season.