For the Los Angeles Lakers, the mission is simple: Get two more wins and become NBA champions. For the Miami Heat, the mission may be even more simple: Get one win and make this a series. Game 3 of the NBA Finals is Sunday night, the Lakers holding a 2-0 lead in the title matchup - putting the franchise within reach of a record-tying 17th championship, LeBron James closer to his fourth ring and Anthony Davis perhaps a few days away from his first crown.