The striker missed the majority of last season with an injury, with his side sorely missing the goal-scoring touch that had nearly helped them to the Premier League title in the 2013-14 campaign.
Sturridge missed the start of this season as well as he recovered from surgery, but he has returned in style, playing the role of Reds’ hero with two goals in the 3-2 win over Aston Villa in the Premier League on Saturday.
Lucas said that his teammate's quality is amazing, and that everyone knows what he is capable of.
"We know what Daniel is capable of," he told Liverpoolfc.com. "He's still not 100 per cent in terms of fitness and sharpness and I think he coped really well today with 90 minutes. His quality is amazing, he can score goals and that's what we were struggling with.”
Result showed team spirit at Liverpool
Reflecting on the victory, the Brazilian midfielder said that it was secured as a result of the great team spirit in the Anfield dressing room.
Brendan Rodgers’ side have been under increasing pressure in recent weeks, having failed to win a game since the 1-0 victory against Bournemouth in mid-August.
It was not a perfect victory for the Reds, though, with them looking shaky defensively to allow Rudy Gestede to score twice to put the pressure back on, and Leiva admits that there are still areas they need to improve in.
"We still have a few things to improve but I think the most important thing today was to win,” he added.
“People have been criticising us a lot, the results haven't been good but today showed we have a great team spirit and a good group of players that want to fight to the end to get things right.”