Reigning Olympic champion Marcell Jacobs continued his preparations for next month's world championships by winning the Italian men's 100 metres title on Saturday.

The 27-year-old was not at his best but took victory in 10.12 seconds, four hundredths of a second quicker than second-placed Chituru Ali, after posting 10.17sec in the heats.

"It was useful to resume competition," he told RAI Sport on Saturday.

“I'm not yet able to manage a complete 100m, especially with two races in an hour. In training I had to do everything at a moderate pace.”