29-year-old Daniel Ståhl has been a giant in the sport for several years and topped the world best list for the past six years.
After this year's first 69 throws, he is again at the top.
Ståhl had the competition's four longest throws.
Behind Ståhl, the Swedish Olympic silver medalist Simon Pettersson finished third in 65.02.
Daniel Ståhl's previous best listing in April is 68.36, which makes the cast his longest ever this early in the year.
Vanessa Kamga hit with 56.41 directly in the first throw in the ladies' competition.
It was the Swede's second longest throw in the last two years.
She finished fifth with that result.
Already this weekend, Ståhl will compete again.
The Disc Swedes who train under Vésteinn Hafsteinsson are currently at their traditional training camp in California.