Indianapolis and Pocono may not be the only stops on Jeff Gordon's comeback tour.

The four-time Cup champion, who is coming out of retirement to fill in for the injured Dale Earnhardt Jr. the next two weekends, kept the door open to running more races if Earnhardt needs more time to recover from concussion-like symptoms.

Gordon is expected to make his season debut in Sunday's Brickyard 400. Hendrick Motorsports has already announced Gordon will replace Earnhardt next weekend at Pocono, too.

In his first public comments since the announcement, the 44-year-old Gordon told reporters he's done everything he can to get ready to race since returning Tuesday from a vacation in France. Gordon believes he can be competitive this weekend at Indianapolis, where he has won a record five times.