Gregor Schlierenzauer made history Sunday by setting the record for most career World Cup ski jumping victories.
The 23-year-old Austrian won a morning competition for his record 47th World Cup victory and added one more with a win in another race on a flying hill in the afternoon.
"Unbelievable," Schlierenzauer said.
Retired Finnish jumper Matti Nykanen has 46 victories.
In the morning, Schlierenzauer took the lead after the first jump of 193.5 metres and cleared 211.0 metres in the second for a combined 421.7 points in windy conditions. Robert Kranjec of Slovenia finished second with 421.4 points after jumping 197.0 and 204.0 metres and Jan Matura of the Czech Republic was third.
Toronto native Mackenzie Boyd-Clowes was 19th overall. He glided to a Canadian record of 205.0 metres with his first jump but had wind issues on his second jump of 155.0 metres.
The race was originally planned for Saturday but was postponed due to high winds.
Later in the day, Schlierenzauer claimed his 48th top finish after leaping 197.5 metres for 191.8 points in the first round. That was enough for the victory because the second round was cancelled due to strong and changing winds.
Matura took second after a jump of 194.5 metres with 187.2 points while Jurij Tepes of Slovenia was third.
Schlierenzauer holds a significant lead in the overall standings with 1,200 points and nine events to go. Norway's Anders Bardal is a distant second with 757 points.
The northern Czech resort will organize the World Championship in ski flying on this hill next year.
Seifriedsberger wins 1st women's World Cup ski jump
Austria's Jacqueline Seifriedsberger won her first women's World Cup ski jump event of the season on Sunday, denying local favourite and overall leader Sara Takanashi of Japan a win on home soil in Sapporo.
Seifriedsberger had jumps of 94 and 93 metres for 245.7 points to finish ahead of Norway's Anette Sagan, who had 241 points after jumps of 93 and 99 metres. Defending overall World Cup champion Sarah Hendrickson of the United States finished third with 240.2 points after jumps of 93.5 and 87.5.
The 16-year-old Takanashi, who has won four World Cup events this season, finished fifth with 225.4 points after two jumps of 86 metres. Slovenia's Spela Rogelj was fourth with 233 points.
After 10 or 16 events, Takanashi has a 140-point lead in the overall standings ahead of Hendrickson while Saturday's winner Coline Mattel of France is third, 144 points back.
Takanashi will get another chance to win in Japan at next weekend's event in Zao.