Patrick Mullins (Maryland), whose arrival last summer helped invigorate D.C. United's bland attack and secure a Major League Soccer playoff berth, has signed a multiyear contract extension. His previous deal was to expire after the 2017 season. Terms were not disclosed, but the 25-year-old striker apparently received a major pay raise. Sources familiar with the deal said he is slated to earn a base salary of $250,000 this year and $260,000 next year, with the club holding an option in 2019 worth $310,000. The first two years are guaranteed. Last year Mullins had a base salary of $96,250 and overall earnings of $126,250, according to the MLS players' union.