Chinese number one Li Na came from a set down to beat Angelique Kerber in the final of the Cincinnati Open.

The 30-year-old, who had won four of her five previous meetings with the German, lost the opening set 6-1 and then found herself 3-1 down in the second.

However, she then won nine games in a row to turn the match on its head before eventually prevailing 1-6 6-3 6-1.

The victory sealed the sixth WTA title win of Li's career.