By Joseph Currier, Wrestling Observer At 73, the Nature Boy is ready to put a bow on his career. At 73 years old, Ric Flair is stepping into the ring for one final match. Flair confirmed to ESPN on Monday that he’ll make his return to the ring at an independent wrestling show on Sunday, July 31. It will be the first time the pro wrestling and pop culture icon has wrestled since 2011. “Jim Crockett Promotions Presents: Ric Flair’s Last Match” is the name of the event. The show is being held at the Nashville Fairgrounds and will stream live via Fite TV. “I’m going to walk that aisle one last tim…