Despite posting Q2 sales and earnings that beat Wall Street's expectations, Foot Locker delivered some bad news for Nike today.Nike (NKE -2.93%) stock lost ground in Wednesday's trading. The footwear and apparel company's share price closed out the daily session down 2.9%, according to data from S&P Global Market Intelligence.Nike stock posted another day of stock decline due to information contained in Foot Locker's second-quarter report and conference call. While Foot Locker actually beat sales and earnin ...