ATHENS — All-American Jarvis Jones was standing on the sidelines at Saturday’s G-Day, a reminder that Georgia will have to rebuild its defense next season. But the bulldog defense could be fine next year, based on Saturday’s 23-17 come-from-behind win by the Blacks over the Reds. The Blacks featured the starting defense against the Reds, loaded with most of the veterans returning on one of the nation’s most effective offenses.