Bowyer explains Millar decision

Lee Bowyer has explained that he did not start Liam Millar last night because of the threat of injury: https://londonnewsonline.co.uk/charlton-boss-bowyer-starting-key-man-would-have-been-an-injury-risk-against-pompey/ 

With hindsight it might have been better to play him for the first 60 minutes than the last 45, but these decisions are never easy.  In any case, his presence might not have overcome the lack of defensive cohesion.