don't know anything about

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hi,

  1. “ Seb Larsson put the ball across, Jordi Gomez had the shot and after the deflection Tim Howard can’t reach it. … Danny Graham will be claiming that. He doesn’t know anything about but when you haven’t scored in 26 games you’ll claim anything."
  2. "That should have been the opening goal. Costel Pantilimon has a good season and kept Sunderland in games on numerous occasions and he didn’t know much about those ones.”

–Same phrase dealt with differently, ain’t it? How would you interpret “he didn’t know much about’ in 2)?