T.J. Oshie scored the lone goal in the shootout, Jaroslav Halak stopped all three Blackhawk shooters in the shootout and the St. Louis Blues defeated the Hawks 3-2 on Thursday night.The Hawks took leads of 1-0 and 2-1, but gave those leads away each time less than a minute later. David Backes scored a power-play goal for St. Louis, while Alexander Steen was credited with an even-strength score in regulation in the Blues’ first road game.Marian Hossa scored on a breakaway and set up Brandon Pirri’s first NHL goal in regulation. All but one of the Blackhawks’ (4-1-2) first seven games have been decided by one goal.The Blues (5-1-0) started the season with five straight home games, and won the first four before losing 6-2 to San Jose on Tuesday.Corey Crawford made 26 saves and Halak had 27.