Nationals signed LHP Gio Gonzalez to a five-year contract extension. The deal runs through 2016 and also contains team options for 2017 and 2018. Gonzalez was eligible for arbitration for the first time this winter as a Super Two qualifier, so the contract buys out at least one year of free agency. It's not clear at this point how much the deal is worth. Gonzalez, 26, boasts a 3.17 ERA and 184 strikeouts per year since the start of the 2010 season. He was acquired by the Nationals last month for a package of prospects.