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Allen's passion for the sport began as a post-retirement curiosity and quickly turned into a competitive pursuit. He's joined in Tahoe by an all-star supporting cast: U.S. champion Jason Smith, two-time Olympic gold medallist John Morris, and curling legend Wayne Middaugh, who returns to skip the squad. Their inclusion as a sponsor's exemption is sure to draw plenty of attention from both curling purists and casual sports fans who never expected to see an NFL Hall of Famer sweeping stones.

While Allen's team brings an undeniable novelty factor, the competition remains fierce and familiar for Canadian curling fans. Top contenders like Rachel Homan, Kerri Einarson, Matt Dunstone, and Brad Jacobs headline the draw, with many Canadians treating Tahoe as a critical tune-up before the upcoming Olympic Trials later this month.

When the rocks start sliding today, it won't just be another stop on the tour. It's a landmark moment for curling -- a blend of tradition and experimentation, northern roots meeting American ambition. Whether it's remembered for its champions, its new rules, or its unexpected celebrity curler, the Grand Slam's U.S. debut will stand as a bold step in the sport's ongoing evolution.

-- Ty Dilello is a reporter for the Winnipeg Sun.