The defender opened the scoring in Newcastle's 3-0 win over Swansea on Saturday, and believes the Magpies have enough quality to survive.
Newcastle United defender Jamaal Lascelles believes Saturday's 3-0 win over Swansea City was indicative of the talent at St James' Park, but insists there is plenty of work to do in order to secure Premier League survival.
The 22-year-old was on hand to bundle home the Magpies' opener just before half-time, before Moussa Sissoko and Andros Townsend capped off a comfortable win with a goal apiece in the last 10 minutes.
The result is Rafael Benitez's first win since taking over at St James' Park and brings Newcastle to within three points of safety with a game in hand, while also seeing them bounce back from an abject 3-1 defeat at Southampton last week.
And the former Nottingham Forest centre-back was delighted to be a part of much-improved display, adding the performance has set the bar for their battle against relegation.
Lascelles told BBC Sport after the game: "It's a massive result for us. The boys had a kick up the backside after last week's loss to Southampton.
"Everyone knows we've got the talent, but today we showed how good we are and we stuck to the gameplan. After the early goal the fans were excellent."
Lascelles pulled no punches in his post-match analysis of last week's defeat on the south coast, but says the win over Swansea shows what the team is capable of.
"I thought I might get stick in the changing room after I had a go at my team-mates. I was going to say it sooner or later.
"The frustrating thing is we should have been playing like that earlier in the season."
Newcastle continue their survival bid with a home game against Manchester City on Tuesday.