England boss Gareth Southgate praised the response of John Stones after the defender recovered from gifting Poland an equaliser to set up Harry Maguire's winner in a close-run World Cup qualifier.
The Three Lions dominated possession in the first-half and led through a Harry Kane penalty, only for Brighton striker Jakub Moder to pounce on Stones and steal possession before equalising.
Stones would regain his composure and head a corner back across goal for Maguire to fire home an 85th-minute strike to earn a 2-1 win and give England three wins from three in Group I.
"That shows we know our players, where we are at and that there is improvement needed to be a top, top team.
"There are some young players doing some fantastic things. You forget sometimes how young and inexperienced some of those lads are and we know that a lot of them are going to peak in two, four, six years' time.
"But we have to keep winning matches and we set a nine-point target (in the March games) and they have achieved that."
The decision to award England a penalty was a controversial one as Raheem Sterling went down under a challenge from Barnsley defender Michal Helik.
Poland head coach Paulo Sousa has called for video assistant referee technology to be introduced in all major competitions as a result of conceding the penalty.
"At this level we need to have VAR," he said.
"We need to have it because it give us more trust in the game, it helps the referee of course.
"But Erik can not go for a tackle inside the box, especially when the player is going out of the pitch, he is not going direct on our goal and we need to make better decisions and we need to have VAR in all competitions."