Coventry City interim manager Mark Venus has said that he was not happy with the goals City conceded in the 3-0 defeat to Charlton Athletic.
Venus told BBC Coventry & Warwickshire: "I enjoyed the way we played, didn't enjoy the goals we conceded. Basic goals, basic mistakes.
"Through the game we created enough opportunities. We got in to good positions, didn't score a goal.
" We moved around the defence, but [Lewis' hamstring injury] was no excuse.
"I don't think we know how to score. The physicality of the league is proving difficult to master.
"We have to go again on Tuesday night; dust ourselves down and keep believing what we're believing."