Nike is set to report fiscal fourth-quarter results after the bell Tuesday as the shoe retailer struggles to regain sales growth and turn around its business under CEO Elliott Hill. The company previously said it expected sales to fall for the rest of the calendar year, while projecting a decline of 2% to 4% in its fiscal fourth quarter. That expectation was well under Wall Street estimates of an increase of 1.9%. Still, Nike said last week that its results will include an unexpected benefit