hometown of Baltimore to attend funeral services for his deceased family member. He made his debut against the Philadelphia 76ers on March 10, 2008. In Boston, Cassell was reunited with former teammates Kevin Garnett and Ray Allen. On March 17, 2008, Cassell had a standout performance in a Saint Patrick's Day matchup against the San Antonio Spurs, when he led the team from a 22-point deficit to a 2-point victory, scoring 17 points and hitting a clutch shot late in the game. Cassell, along with Eddie House, James Posey, P.J. Brown, and Leon Powe, gave the Celtics arguably the best bench in the NBA that season. They helped the Celtics finish with an NBA-best 66–16 record en route to the NBA Finals. The Celtics defeated the Lakers 4–2, with the Celtics bench out-scoring the Lakers' in five of the six games. The win gave Cassell his third championship, which would also be the last game he played. During the 2008–09 season, Cassell served as an unofficial assistant to head coach Doc Rivers; though he did not play in any games, he was still officially listed as an active player. On February 17, 2009, Cassell was traded to the Sacramento Kings for a conditional second-round draft pick in the 2015 NBA Draft. The move was done strictly for salary cap purposes and Cassell was not expected to play for the Kings. One day later, Sacramento waived him. Cassell cleared waivers and was eligible to re-sign with Boston or another contender, but opted to sit out the remainder of the season, and he announced his retirement in May 2009. In 2015, Paul Pierce stated that he felt he, Garnett and Cassell were the real "Big 3" of the Celtics 2008 championship team. Coaching career Washington Wizards On May 21, 2009, Cassell was named assistant coach of the Washington Wizards, joining Flip Saunders who was his coach in Minnesota. John Wall, who was drafted first overall by the Wizards in 2010, credits Cassell for his development into one of the NBA's premier point guards and leadership during the team's Eastern Conference semi-finals appearance in 2014 – their first playoff series win since 2005. During the 2014 offseason, Cassell's former teammate Paul Pierce signed with the Wizards, and admitted he made the decision to sign with Washington after speaking with Cassell. Los Angeles Clippers After five seasons with the Wizards, Cassell was hired by