Nordstrom stock pops 14% after 2nd-quarter profits come in higher than expected.\xa0 Dick\u2019s Sporting Goods posts a good 2nd-quarter report, but does the future of sports retailers belong to businesses that focus on a single sport?\xa0 Jason Moser analyzes those stories, as well as Apple\u2019s new credit card. Plus we dip into the Fool Mailbag to offer investing advice for a soon-to-be uncle.\xa0 (To get 50% off our Stock Advisor service, go to http://StockIdeas.Fool.com.)