Dorchester native Bruce Brown helped the Denver Nuggets win the NBA Finals championship on Monday night, scoring 10 points in 28 minutes as the Miami Heat fell, 94-89. The 26-year-old forward hit two big free throws to tie the game in the fourth quarter, then snagged a big offensive rebound and laid the ball in to give the Nuggets the lead and a few moments later, their first-ever league championship. Brown, who played high school hoops for Wakefield High and Vermont Academy before a college stint at University of Miami, is now, in his sixth season, an NBA champion. As the celebration got underway, Boston Globe sportswriter Gary Washburn tweeted: “Bruce Brown just told me he’s going to try to bring the Larry O’Brien Trophy back to Dorchester for a visit, so young kids see what can happen when you dream.”