Sentence:  Karius has too much previous for this to be considered a one-off and, as goalkeeping mistakes go, his errors in the 51st and 83rd minutes were as bad as one another. In fact, they were not just bad. They were <WSD>appalling</WSD>, so wretched it was difficult to recall a worse goalkeeping performance in any major final through the years. 
Meaning of the word marked with <WSD> tags:  Extremely bad; terrible