Red Sox manager Bobby Valentine has shuffled his coaching staff, according to a source. Jerry Royster will join Boston as third-base coach, replacing Tim Bogar, who will move to bench coach. Bogar, who was third-base coach under Terry Francona the past two seasons, becomes an obvious candidate to succeed Valentine when his term with the Red Sox ends. Valentine is signed for two years, plus an option. Bogar played for Valentine's Mets in 1996.