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Last updated: April 20, 2026, 11:30 AM ET

Stanley Cup First Round Shocks & Storylines

The opening weekend of the Stanley Cup playoffs delivered immediate drama, with several matchups seeing significant upsets and veteran coaches facing immediate pressure 1. The Vegas Golden Knights, operating under new coach John Tortorella, demonstrated immediate form by staging a three-goal third-period rally to claim a 4-2 victory in Game 1 over the Mammoth, extending their regulation-loss-free streak since Tortorella's arrival last month 3. Elsewhere, the Buffalo Sabres snapped a 15-year playoff drought by overcoming a two-goal deficit in the final eight minutes Sunday night, defeating the heavily favored Bruins 4-3 in their return to postseason action 4.

The biggest shock came in the Eastern Conference, where the Montreal Canadiens downed the Tampa Bay Lightning 4-3 in overtime, fueled by a spectacular performance from 22-year-old Juraj Slafkovsky, the 2022 No. 1 overall pick, who netted his third power-play goal 1:22 into the extra session 7. Lightning coach Jon Cooper publicly lamented the loss, attributing the overtime defeat to "stupidity" regarding penalties his team committed throughout the contest 5. Meanwhile, the top-seeded Avalanche secured a hard-fought Game 1 win against the Kings, capped by Logan O'Connor scoring his first goal in nearly a year to seal the victory 6.

As the 16-team field navigates the best-of-seven format, analysts are preparing for potential strategic shifts, drawing parallels between the high-stakes elimination structure of the NHL postseason and established narratives found in professional wrestling like Wrestlemania. Attention remains focused on the league's elite talent, with prognosticators already identifying the top 50 players who are projected to dictate the outcome of these opening-round series and beyond 2.