Pat Riley's shocking '90s exit from the Knicks, resigning via fax to join the Heat sparked a fierce rivalry, fueling a decade of bad blood, playoff wars, and brutal clashes.

Hamilton and Verstappen's rivalry became one of F1's fiercest. As Hamilton chased a record 8th title, Verstappen fought for his first, igniting a brutal battle for supremacy.

The Blue Jays-Rangers rivalry ignited in the 2015 ALDS with Bautista's bat flip. In 2016, tensions exploded when he was hit, slid hard into second, and took Odor's brutal punch.

Floyd Mayweather Jr. and Manny Pacquiao's rivalry built up to the 2015 Fight of the Century, a clash of styles, drama, and anticipation that defined boxing supremacy.

Ronda Rousey and Miesha Tate's rivalry defined women's MMA. Ronda's Judo clashed with Miesha's wrestling in two title fights, boiling over into The Ultimate Fighter and beyond.

Brooks Koepka and Bryson DeChambeau's feud made golf a battleground of egos. What began as jabs spiraled into chaos, viral moments, and nonstop drama.

Conor McGregor and Khabib Nurmagomedov's rivalry, fueled by insults, egos, and a cultural divide, exploded before UFC 229, sparking a shocking post-fight brawl.

By the 2003-2004 season, the Eagles were primed for a Super Bowl run, but tensions between Terrell Owens and Donovan McNabb escalated, dividing the team and fueling a rivalry. 

In the 1996 NHL Western Conference Finals, Detroit's 41-year Cup drought collided with the new-look Colorado Avalanche. A brutal hit and Lemieux's sucker punch ignited chaos. 

Brett Favre, Aaron Rodgers, and Ted Thompson's clash sparked a fiery rivalry. As Favre's reign faded, tension, media chaos, and power struggles tore apart the Packers forever.

Mike Piazza and Roger Clemens' rivalry peaked in the 2000 World Series when Clemens threw a broken bat at Piazza, following a fastball to his head, sparking an iconic brawl. 

When Shaq and Kobe joined the Lakers, a dynasty seemed certain. But clashing egos, contrasting styles, and Hollywood pressure made their partnership a ticking time bomb.