Free S.F. concert is one of 7 ways Dub Nation is getting pumped for tonight’s Warriors opener

Warriors fans at Oracle Arena during the 2015 NBA Playoffs. (Photo credit: Michael Short, Special To The Chronicle) The shortest Warriors offseason ever is almost over. For the first time in a generation, the Dubs will begin a title defense when they take the court at Oracle Tuesday night at 7:30 p.m. Those of you who are already wearing your Strength in Numbers shirts and thinking you've done enough to protect "Warriors Ground," think again. Here are seven more steps you should consider to get yourself in regular season form: 1 – Check out the free concert by X Ambassadors at Pier 43 in San Francisco tonight. Sure, there are gripes