Jeff Gordon had long planned to be at Darlington Raceway this weekend, largely to greet fans and answer questions about his career as a four-time Sprint Cup champion. Gordon now has a more important role this weekend as fill-in driver for injured Dale Earnhardt Jr. - gain a victory in the Southern 500 that could lead the Hendrick Motorsports team into NASCAR's championship chase. ''It's a track that I'm comfortable on and that I like,'' Gordon said this week. More...