GSOC Invitational
https://www.thegrandslamofcurling.com/The GSOC Invitational, previously known as the Tour Challenge until 2026, is a bonspiel, or curling tournament, which is one of the Grand Slam of Curling events. It was first introduced into the Grand Slam lineup starting in the 2015–16 curling season.
Until 2026, the event featured a men's and women's draw, and was split into two tiers of 16 teams each, Tier 1 and Tier 2. The top 16 teams on the World Curling Federation team ranking qualify for the Tier 1 event, while the next top 16 teams qualify for the Tier 2 event.
Until 2026, the event featured a men's and women's draw, and was split into two tiers of 16 teams each, Tier 1 and Tier 2. The top 16 teams on the World Curling Federation team ranking qualify for the Tier 1 event, while the next top 16 teams qualify for the Tier 2 event.
- Category
- Events
- Listed
- Nov 10, 2026
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