I like the boston celtics but they lost 
Are you talking about the team that is based in Boston?
Yes !
Boston Celtics
The Boston Celtics are an American professional basketball team based in Boston, Massachusetts. The Celtics compete in the National Basketball Association (NBA) as a member of the league's Eastern Conference Atlantic Division. Founded in 1946 as one of the league's original eight teams, the team play their home games at TD Garden, which they share with the National Hockey League (NHL)'s Boston Bruins. The Celtics are one of the most successful teams in NBA history; the franchise has won the most championships in
that season and being hampered by injuries, Iverson averaged 31.4 points per game to earn his second consecutive scoring title. The 76ers lost to the Boston Celtics in the first round of the playoffs 3-2 in the five game series. After the defeat, Brown criticized Iverson for missing team practices. Iverson responded by saying, "We're sitting here, I'm supposed to be the franchise player, and we're in here talking about practice," and went on a rant that included the word "practice" 14