WATCH: Best of WWE SmackDown

Sami Zayn revealed his true colours on SmackDown this week, spectacularly turning on best friend Kevin Owens to gain a mental edge heading into Sunday's Sky Sports Box Office live event, Fastlane.

Zayn caught KO with a surprise Helluva Kick to pin his 'Yep! Movement' ally in a Fatal-5-Way match between five of the six WWE superstars that meet for the WWE Title at Fastlane.

Starring down a stunned Owens from the entrance ramp, Sami declared he had proven he was the best the WWE has, heading into arguably the biggest match of his WWE career.

WWE Late Night Smackdown

Ruby Riott and Charlotte exchanged words in the ring ahead of their WWE Smackdown women's title match at Fastlane.

Riott mocked the champion, promising to destroy the myth of Charlotte Flair, take her title and be the reason The Queens' reality crumbles.

Still smarting at his omission from Sunday's United States Championship match, Jinder Mahal notched a big win over Randy Orton, albeit with the inadvertent assistance of champion Bobby Roode.

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After the action spilled outside the ring, Orton threw the Modern Day Maharaja into the US champion. But as he prepared to unleash an RKO, Roode jumped up on to the ring apron, distracting The Viper long enough for Mahal to hit a match-ending Khallas.

After trading verbal insults on social media, Becky Lynch and Carmella took matters into the ring. Lynch's straight-fire was burning brightly, forcing Miss Money in the Bank to tap out to the Dis-Arm-Her.

Click on the video above to relive the best moves from this week's offering from the red brand!