The 2005–06 Miami Heat season was the 18th National Basketball Association season for the Miami Heat basketball franchise. During the offseason, the Heat acquired Jason Williams and James Posey from the Memphis Grizzlies, and All-Star forward Antoine Walker from the Boston Celtics, while signing free agent All-Star point guard Gary Payton. Early into the season, after a 11–10 start to the year, head coach Stan Van Gundy resigned, citing the desire to spend more time with his family, and Pat Riley resumed coaching the Heat. The Heat went 41–20 the rest of the way, finishing with a 52–30 record, good enough for first place in the Southeast Division and second place in the Eastern Conference overall. Dwyane Wade and Shaquille O'Neal were both selected for the 2006 NBA All-Star Game.

In the first round of the playoffs, the Heat defeated the Chicago Bulls in six games, and the New Jersey Nets in five games in the semi-finals to advance to the Eastern Conference Finals against the Detroit Pistons in a rematch of last year's playoffs. After splitting the first two games of the series, the Heat defeated the Pistons in six games to advance to the NBA Finals for the first time in franchise history, where they faced the Dallas Mavericks. After losing the first two games of the series, the Heat recovered to win the next four games and the first ever championship in franchise history. The team was nicknamed "15 Strong".

Offseason In August 2005, Shaquille O'Neal signed a 5-year-extension with the Heat for $100 million. Supporters applauded O'Neal's willingness to take what amounted to a pay cut, and the Heat's decision to secure O'Neal's services for the long term. They contend that O'Neal was worth more than $20 million per year, particularly given that considerably less valuable players earn almost the same amount. Critics, however, questioned the wisdom of the move, characterizing it as overpaying an aging and often injured player. On August 2, 2005, the Heat were involved in one of the largest trades in NBA history. It was a five-team trade which included the Heat, the New Orleans Hornets, the Memphis Grizzlies, the Boston Celtics, and the Utah Jazz. The Heat traded Rasual Butler to the Hornets, Eddie Jones to the Grizzlies, and Albert Miralles, Qyntel Woods, a 2006 2nd round draft pick, and a 2008 2nd round draft pick to the Celtics. In return, the Heat received Antoine Walker from the Celtics, Andre Emmett, James Posey, and Jason Williams from the Grizzlies, and Roberto Dueñas from the Hornets. Walker would be a reliable bench player during the season. Posey and Williams would be starters at small forward and point guard, respectively. Emmett would be waived on October 31, while Dueñas would not sign with the team.

On the same day, the Heat would sign Kasib Powell. He would sign with the Chicago Bulls on September 29, and the Bulls waived him on November 2. Powell may not have played on the Heat during the season, but would join the team two seasons later. On August 12, the Heat signed Gerald Fitch. Fitch would be traded to the Houston Rockets on February 23 for Derek Anderson. On August 15, the Heat signed Matt Walsh. Walsh would be waived on November 18. On September 22, the Heat signed Hall-of-Famer Gary Payton. Payton would play his final two seasons in the NBA with the Heat. On October 3, the Heat signed Jason Kapono. On October 8, the Heat signed Earl Barron.

NBA draft Round Pick Player Position Nationality School/Club team 1 29 Wayne Simien Forward Kansas

Roster

Regular season In the second game of the 2005–06 season, O'Neal injured his right ankle and subsequently missed the following 18 games. Many critics stated that Heat coach Pat Riley correctly managed O'Neal during the rest of the season, limiting his minutes to a career low. Riley felt doing so would allow O'Neal to be healthier and fresher come playoff time. Although O'Neal averaged career (or near-career) lows in points, rebounds, and blocks, he said in an interview "Stats don't matter. I care about winning, not stats. If I score 0 points and we win I'm happy. If I score 50, 60 points, break the records, and we lose, I'm pissed off. 'Cause I knew I did something wrong. I'll have a hell of a season if I win the championship and average 20 points a game." During the 2005–06 season, the Heat recorded only a .500 record without O'Neal in the line-up. During the 2005 off-season, it was widely speculated Pat Riley was attempting to run Van Gundy out of his coaching job and take over the job himself, as the team was in a position to contend for the championship. Van Gundy would resign from his position as head coach on December 12, 2005, just 21 games into the season, citing a need to spend more time with his family. Riley replaced him as head coach, and led Miami to their first championship that same season.

In Shaquille O'Neal's book, "Shaq Uncut: My Story", O'Neal responded to allegations of being a "coach killer" and that he forced Van Gundy out of Miami by stating: "Stan got fired because Pat (Riley) wanted to take over, not because I wanted him out. I had no control over it — not a smidgen of control. We all kind of knew it was coming because Pat and Stan were always arguing. Pat would come down and tell Stan how to do something and Stan would want to do it his own way, and that was a fine game plan if you wanted to get yourself fired." On April 11, 2006, Shaquille O'Neal recorded his second career triple-double against the Toronto Raptors with 15 points, 11 rebounds and a career high 10 assists.

Standings

Game log

|- bgcolor="#ccffcc" | 1 | November 2 | @ Memphis | | Antoine Walker (25) | Antoine Walker (16) | Dwyane Wade (6) | FedEx Forum18,119 | 1–0 |- bgcolor="#ffcccc" | 2 | November 3 | Indiana | | Dwyane Wade (31) | Udonis Haslem (8) | Dwyane Wade (10) | American Airlines Arena20,128 | 1-1 |- bgcolor="#ffcccc" | 3 | November 5 | @ Milwaukee | | Dwyane Wade (21) | Alonzo Mourning (12) | Dwyane Wade (9) | Bradley Center18,717 | 1–2 |- bgcolor="#ccffcc" | 4 | November 7 | New Jersey | | Dwyane Wade (23) | Alonzo Mourning (11) | Dwyane Wade (6) | American Airlines Arena19,600 | 2-2 |- bgcolor="#ffcccc" | 5 | November 9 | @ Indiana | | Dwyane Wade (29) | Wade, Haslem (11) | Dwyane Wade (6) | Conseco Fieldhouse17,586 | 2–3 |- bgcolor="#ccffcc" | 6 | November 10 | Houston | | Dwyane Wade (25) | Alonzo Mourning (9) | Dwyane Wade (7) | American Airlines Arena19,600 | 3-3 |- bgcolor="#ccffcc" | 7 | November 12 | Charlotte | | Jason Williams (22) | Udonis Haslem (11) | Williams, Wade (7) | American Airlines Arena19,600 | 4–3 |- bgcolor="#ccffcc" | 8 | November 15 | New Orleans/Oklahoma City | | Dwyane Wade (25) | Alonzo Mourning (11) | Dwyane Wade (10) | American Airlines Arena19,600 | 5–3 |- bgcolor="#ccffcc" | 9 | November 18 | Philadelphia | | Dwyane Wade (32) | Udonis Haslem (12) | Dwyane Wade (10) | American Airlines Arena20,068 | 6–3 |- bgcolor="#ffcccc" | 10 | November 20 | @ Toronto | | Dwyane Wade (33) | Dwyane Wade (8) | Dwyane Wade (9) | Air Canada Centre17,594 | 6–4 |- bgcolor="#ccffcc" | 11 | November 23 | Portland | | Dwyane Wade (19) | Dwyane Wade (11) | three players tied (4) | American Airlines Arena19,600 | 7–4 |- bgcolor="#ffcccc" | 12 | November 25 | Dallas | | Jason Williams (24) | Udonis Haslem (8) | Jason Williams (5) | American Airlines Arena20,246 | 7–5 |- bgcolor="#ffcccc" | 13 | November 26 | @ Orlando | | Dwyane Wade (21) | Alonzo Mourning (21) | Dwyane Wade (4) | TD Waterhouse Centre16,619 | 7–6 |- bgcolor="#ccffcc" | 14 | November 28 | New York | | Dwyane Wade (33) | Udonis Haslem (12) | Jason Williams (6) | American Airlines Arena19,894 | 8–6 |- bgcolor="#ccffcc" | 15 | November 30 | @ Atlanta | | Jason Williams (21) | Alonzo Mourning (12) | Jason Williams (9) | Philips Arena16,029 | 9–6

|- bgcolor="#ccffcc" | 16 | December 2 | @ Sacramento | | Dwyane Wade (27) | Udonis Haslem (8) | Jason Williams (8) | ARCO Arena17,317 | 10–6 |- bgcolor="#ffcccc" | 17 | December 3 | @ Denver | | Dwyane Wade (32) | James Posey (10) | Dwyane Wade (6) | Pepsi Center18,196 | 10–7 |- bgcolor="#ffcccc" | 18 | December 5 | @ L.A. Clippers | | Dwyane Wade (29) | Alonzo Mourning (12) | Jason Williams (9) | Staples Center19,060 | 10–8 |- bgcolor="#ffcccc" | 19 | December 7 | @ San Antonio | | Dwyane Wade (31) | Alonzo Mourning (7) | Dwyane Wade (10) | SBC Center18,797 | 10–9 |- bgcolor="#ffcccc" | 20 | December 9 | Denver | | Dwyane Wade (37) | Dwyane Wade (10) | Antoine Walker (5) | American Airlines Arena19,896 | 10-10 |- bgcolor="#ccffcc" | 21 | December 11 | Washington | | Dwyane Wade (41) | Shaquille O'Neal (11) | Dwyane Wade (8) | American Airlines Arena19,600 | 11–10 |- bgcolor="#ccffcc" | 22 | December 13 | @ Chicago | | Shaquille O'Neal (30) | Alonzo Mourning (12) | Dwyane Wade (11) | United Center19,129 | 12–10 |- bgcolor="#ccffcc" | 23 | December 14 | @ Milwaukee | | Dwyane Wade (27) | Udonis Haslem (10) | Dwyane Wade (7) | Bradley Center16,287 | 13–10 |- bgcolor="#ccffcc" | 24 | December 16 | @ Philadelphia | | Dwyane Wade (32) | Shaquille O'Neal (13) | Gary Payton (5) | Wachovia Center20,652 | 14–10 |- bgcolor="#ffcccc" | 25 | December 17 | @ Cleveland | | Dwyane Wade (33) | Shaquille O'Neal (6) | Wade, Walker (7) | Quicken Loans Arena20,562 | 14–11 |- bgcolor="#ccffcc" | 26 | December 20 | Atlanta | | Shaquille O'Neal (28) | Shaquille O'Neal (10) | Gary Payton (8) | American Airlines Arena20,294 | 15–11 |- bgcolor="#ffcccc" | 27 | December 23 | New Jersey | | Shaquille O'Neal (24) | Shaquille O'Neal (14) | Dwyane Wade (7) | American Airlines Arena20,065 | 15–12 |- bgcolor="#ccffcc" | 28 | December 25 | L.A. Lakers | | Gary Payton (21) | Shaquille O'Neal (17) | Dwyane Wade (5) | American Airlines Arena20,277 | 16–12 |- bgcolor="#ccffcc" | 29 | December 27 | Milwaukee | | Dwyane Wade (35) | Shaquille O'Neal (8) | Wade, Williams (7) | American Airlines Arena20,270 | 17–12 |- bgcolor="#ffcccc" | 30 | December 29 | @ Detroit | | Dwyane Wade (33) | Udonis Haslem (10) | Dwyane Wade (9) | The Palace of Auburn Hills22,076 | 17–13 |- bgcolor="#ccffcc" | 31 | December 30 | @ Washington | | Dwyane Wade (34) | Antoine Walker (13) | Gary Payton (7) | MCI Center20,173 | 18–13

|- bgcolor="#ccffcc" | 32 | January 1 | Minnesota | | Dwyane Wade (19) | Alonzo Mourning (10) | Dwyane Wade (9) | American Airlines Arena20,274 | 19–13 |- bgcolor="#ffcccc" | 33 | January 4 | @ New Orleans/Oklahoma City | | O'Neal, Wade (19) | Dwyane Wade (10) | Dwyane Wade (10) | Ford Center19,326 | 19–14 |- bgcolor="#ffcccc" | 34 | January 6 | @ Phoenix | | Antoine Walker (22) | Shaquille O'Neal (13) | Gerald Fitch (6) | US Airways Center18,422 | 19–15 |- bgcolor="#ccffcc" | 35 | January 8 | @ Portland | | Dwyane Wade (31) | James Posey (9) | Jason Williams (8) | Rose Garden18,032 | 20–15 |- bgcolor="#ccffcc" | 36 | January 11 | @ Golden State | | Dwyane Wade (32) | Haslem, O'Neal (10) | Dwyane Wade (11) | The Arena in Oakland20,075 | 21–15 |- bgcolor="#ccffcc" | 37 | January 13 | @ Seattle | | Posey, Williams (19) | Dwyane Wade (10) | Dwyane Wade (14) | KeyArena17,072 | 22–15 |- bgcolor="#ccffcc" | 38 | January 14 | @ Utah | | Dwyane Wade (31) | Shaquille O'Neal (14) | Dwyane Wade (8) | Delta Center19,911 | 23–15 |- bgcolor="#ffcccc" | 39 | January 16 | @ L.A. Lakers | | Dwyane Wade (34) | Udonis Haslem (12) | Dwyane Wade (7) | Staples Center18,997 | 23–16 |- bgcolor="#ffcccc" | 40 | January 20 | San Antonio | | Dwyane Wade (36) | Posey, Walker (7) | Haslem, Williams (3) | American Airlines Arena20,287 | 23–17 |- bgcolor="#ccffcc" | 41 | January 22 | Sacramento | | Shaquille O'Neal (27) | three players tied (6) | Jason Williams (11) | American Airlines Arena20,071 | 24–17 |- bgcolor="#ccffcc" | 42 | January 24 | Memphis | | Dwyane Wade (25) | Shaquille O'Neal (15) | Jason Williams (6) | American Airlines Arena19,600 | 25–17 |- bgcolor="#ffcccc" | 43 | January 26 | Phoenix