Cucurella, 27, provided the assist for Estevao’s 95th minute winner as Chelsea stunned Premier League holders Liverpool at Stamford Bridge on Saturday (October 4).
Liverpool have now suffered three consecutive defeats across all competitions, with Arsenal leapfrogging them at the top of the table.
Chelsea, who had seven first team players out due to either injury or suspension, were forced to rely on teenagers for large portions of the game.
Speaking to Sky Sport after the final whistle, Cucurella singled out Estevao, 18, and young defender Hato, 19, for their impact off the bench.
"He came into the game maybe his first time against Liverpool in the Premier League and the pace of the game was very high. He came with the personality. Hato as well, he came in the middle of the game,” he said.
"It is difficult to come from the bench into these games with a lot of intensity and transition. These two players deserve this moment. It is never easy to adapt to the Premier League, today I think they show their quality."