Canoe Sprint World Championships: Emma Wiggs wins fifth straight KL2 world title
Great Britain's Emma Wiggs completed the calendar Grand Slam of major Para-canoe titles as she took her fifth successive world KL2 gold in the Czech Republic.
Wiggs who won Paralympic gold at Rio 2016, and earlier this year also took the European title, beat her team-mate Nikki Paterson into silver.
"To get the Grand Slam is unbelievable," Wiggs told BBC Sport.
"This has been one of the hardest ones in the year after Rio."
GB's Jonny Young also won gold in the VL3 category, with Martin Tweedie crossing the line for bronze.
"It feels pretty good. With the European title and now this the year's gone surprisingly well," said Young, who also goes in the final of the KL3 event on Saturday.
Wiggs and Paterson's one-two in the KL2 underlines GB's dominance in the event.
Paterson, finished ahead of the Rio 2016 silver and bronze medallists, yet was unable to go to the Games herself due to the one-boat-per-nation rule.
"The only person who has actually beaten me at a world championships for the last three years is Emma," said Paterson.
"That's what makes events like this so important because we can have two boats and show how good we really are."
Wiggs added: "I think it's testament to the performance programme we have that my biggest competitors are my team-mates."
Elsewhere, Rio Paralympic bronze medallist Ian Marsden was edged out of the podium places, finishing fourth in the KL1 event.
Meanwhile, Olympic champion Liam Heath comfortably won his heat in the K1 200m event.
Heath, who won a gold and silver medal at Rio 2016, finished in a time of 35.004 seconds, almost a second ahead of his closest rival.
The 33-year-old holds the world leading time in the 200m and is looking to complete the set of Olympic, European and World titles.
The semi-final takes place on Saturday afternoon in Racice.