Liverpool’s defence has been vastly improved with the arrivals of Virgil van Dijk and Alisson Becker.
There’s a case to be made for Van Dijk being the best centre-back in the world - Mats Hummels certainly believes so - his performances helping Liverpool to the top of the Premier League table.
And Alisson has now kept 13 clean sheets following the 1-0 win against Brighton on Saturday.
Yet the Brazilian goalkeeper’s debut season in England hasn’t been without its mistakes.
He made a costly error against Leicester City in September and allowed a cheap goal against Manchester United in December.
But there’s no doubting that Alisson has proven to be a fine addition to Jurgen Klopp’s squad.
His confidence with the ball at his feet is hugely beneficial in the modern game - although Girona goalkeeper Bono may beat him in that department.
Alisson applauds Girona GK's skill
The Moroccan produced a crazy piece of skill in a 1-1 draw against Alaves on Saturday that Alisson himself had to applaud.
The Liverpool ‘keeper was made aware of the clip on Twitter and his reaction shows he loved it.
Liverpool fans quickly pointed out that they are totally against the idea of Alisson attempting anything like that in a match.
Funnily enough, Alisson warned Liverpool supporters with heart problems to be careful when they watch him play.
“It gives me a lot of confidence to play with my feet and I have to be focused for 90 minutes,” he told ESPN Brasil in August, via the Independent.
“It is already calculated. I take risks. Fans with heart problems have to be careful!”
Liverpool now have a No.1 good enough to help them win the Premier League title.
The Reds have conceded just 10 goals through 22 league matches, an astonishing return. It’s no wonder they’re at the top of the table.
The win over Brighton, which came courtesy of Mohamed Salah’s penalty, means Liverpool now have a seven point lead at the top.
All eyes will be on Manchester City's match against Wolves on Monday.