Jonathan Rea completed his 13th career double by winning race two in the World Superbikes round at Assen on Sunday.
Having won the first race on Saturday, the Northern Irishman started ninth on the grid but surged through to take the lead on the second lap.
Rea was pushed all the way by Kawasaki team-mate Tom Sykes from Yorkshire and clinched his 11th win at the Dutch circuit by just 0.025 seconds.
Reigning champion Rea now leads the WSB series by 64 points after four rounds.
It was his 11th win at Assen, just one short of Carl Fogarty's record, and strengthens his attempt to become the first rider to win the World Superbike Championship three years in a row.
Rea has dominated the 2017 WSB series, winning seven out of the eight races and being runner-up in the other.