The Reds continued their Premier League title march with a stunning 5-0 romp at Anfield.
Mane was used in an unfamiliar central role in Roberto Firmino’s absence and the winger excelled, netting twice against the Hornets.
The Senegal international opened the scoring early on with a well-taken header.
And Mane had his second 10 minutes later as he controlled Trent Alexander-Arnold’s cross before digging a backheel over the onrushing Ben Foster.
“I was a lucky boy and I scored.”
Liverpool star Sadio Mane
The 26-year-old has rightly received plaudits for the audacious finish.
But Mane admits he got slightly fortunate.
“Trent made a very good cross and I was in the box,” he said.
“I was a lucky boy and I scored.
“It’s one of [the most adventurous goals I’ve scored], yes.
“But the most important thing is the three points and we got it, so I’m happy.
“It was my first time since I came to Liverpool I played centrally.
“I always said I’m here for the team, so I try to play any position the coach asks me to play to help the team.
“We started fast in the game, we moved quickly with and without the ball and created many chances.
“We scored five goals and we deserved the win.
“The team was fantastic, everybody played well. It was the key.”
Liverpool return to Premier League action on Sunday as they travel to fierce rivals Everton.