article_snippet.sent: Advocaat and assistant manager Paul Bracewell oversee training ahead of Sunday's crucial derby fixture .
article_snippet.sent: Sunderland striker Jermain Defoe (centre) trains with Sunderland manager Dick Advocaat team-mates ahead of the game with Newcastle .
article_snippet.sent: Sunderland midfielder Will Buckley (centre) dribbles with the ball during training at the Academy of Light .