Krystian Bielik has opened up about the lessons he’s learned after being taken off just 45 minutes into Charlton’s defeat to Rochdale.

Ian Henderson’s 99th goal for the hosts was enough as Bielik, who was drafted in at centre back, was replaced with Ben Reeves during half-time.

The 20-year-old recovered to start at the heart of the defence alongside captain Jason Pearce during Charlton’s 2-0 win over Doncaster Rovers.

After the game, which sees Lee Bowyer’s men rise to eighth in League One, he discussed the tough day up at Spotland Stadium.

Bielik said: “I've never come off after 45 minutes, that was something new for me.

“The gaffer made the decision and I knew that it's not my best game, and that it's not my standard. Maybe lower than my standard.

“That's his decision, I have to accept it.

“Of course straight away, after when he said I'm coming off, I was saying that's going to be tough now for me and I have to do my best in training. Show him that I'm good to play and I deserve to play games for 90 minutes, not just 45.

“We had a proper meeting with him and he said that no one is safe in this team and everyone has to fight for their place because he believes in the quality in this team - not just 11 but 23 players.”

The defender has made eight appearances for Charlton so far this season, scoring once in the heated away win over Southend United at Roots Hall.

After missing a lot of September, his outing in the victory over Doncaster at the Valley was his fourth on the trot.

Now he is eyeing another start, this time against Walsall who he joined originally in a season-long loan deal when the Addicks travel away to the Bescot Stadium in midweek.

When asked whether anyone spoke with him following the Rochdale defeat, he added: “The lads shook my hand and they said to keep your head up.

“It's all in your head, you just have to clear your head, believe in your qualities, and start again next week. Next training [session], you have to show that was a mistake, that I should've stayed on the pitch.

“I'm not saying he made a mistake, I just want to show in the next training [session] that I should play. That was in my head.

“Sometimes it's good when boys just leave you alone in these situations. You have to play with that alone and I think it was a good experience for me as well.”