As a full-time starter, the "Torture Chamber" (1985–1988)
The 1985–1986 edition of the Boston Celtics won the franchise's 16th NBA championship and is considered one of the greatest teams in NBA history.
The Celtics acquired former NBA Most Valuable Player Bill Walton in a trade from the Los Angeles Clippers (formerly the San Diego Clippers) in September 1985, and added the 6 ft 11 in (211 cm) center to its already-formidable frontline. Boston sent Cedric Maxwell to the Clippers to complete the trade, clearing the way for McHale to move into a full-time starting role. McHale averaged better than 20 points per game for the first time in his career (21.3) and finished 13th in the NBA Most Valuable Player voting.
He joined starters Bird, Parish, Johnson and Danny Ainge as the Celtics steamrolled the NBA with a league-best 67–15 record. The team set a then-NBA record by finishing with an 82–18 win–loss record (including playoffs), breaking the record of 81 victories by the 1971–72 Lakers.
Boston also set the NBA mark for most home victories in one season, finishing 50–1 (including playoffs) in 48 games in the Boston Garden and three games in Hartford, Connecticut. The Portland Trail Blazers were the only team to beat Boston at home, winning 121–103 in Boston Garden on December 6, 1985. The Celtics did not lose again at home until more than a year later, when the Lakers beat them 117–110 on December 12, 1986.
Boston won 41 of its first 50 games, including two victories over the Lakers. In a rout of the Clippers on December 30, 1985, McHale set his single-game high in rebounds with 18 (a mark he tied against the Pistons in 1989).
An extremely durable player through the first five seasons of his career, McHale missed 14 games in early 1986 due to an injured Achilles tendon in his left ankle, but was healthy in time for the playoffs. Boston rolled through the Eastern Conference, winning 11 of 12 games versus Chicago, Atlanta and Milwaukee.
For the second time in five years, the Celtics faced Houston in the NBA Finals, and Boston won the championship in six games. McHale averaged 25.8 points per game in the finals to lead all scorers.
By his seventh pro season, McHale had rehearsed and refined his low-post moves and had become one of the NBA's most dominant offensive forces, out-leaping, out-spinning and outmaneuvering defender after defender in his "torture chamber". McHale was never better than in the 1986–1987 season, setting career highs in scoring (26.1) and rebounding (9.9). He also became the first player in NBA history to shoot 60 percent or better from the field (60.4%) and 80 percent or better from the free-throw line (83.6%) in the same season. McHale was named to the All-NBA First Team, was named the NBA's best defensive player by the league's coaches, and finished fourth in the Most Valuable Player voting behind Magic Johnson, Michael Jordan, and teammate Larry Bird.
In nine games from February 23 through March 13, 1987, McHale averaged 30.7 points and 10 rebounds per game while shooting 71.7 percent from the floor. During this stretch, McHale scored his season-high in points, 38 versus the Pistons on March 1.
In a win at Chicago on March 27, McHale broke the navicular bone in his right foot. He ignored doctors' advice that the injury could be career-threatening and continued to play. In the playoffs, a hobbled McHale averaged 39 minutes per game and connected on 58 percent of his shots as Boston again won the Eastern Conference title. Boston swept the Bulls in the first round for the second straight year and survived two epic but bruising seven-game series with the Bucks and Pistons. The battered and fatigued Celtics - with not only McHale, but also Parish (two sprained ankles), Ainge (leg injury) and Walton (broken foot) playing hurt - then lost to the Lakers in six games in the 1987 NBA Finals.
Off-season surgery on his injured right foot and ankle forced McHale to sit out the first month of the 1987–1988 season. He scored 22 points in 22 minutes of play in his return to the Celtics on December 1, 1987, versus Atlanta.
Teammate Danny Ainge once called McHale "The Black Hole of the low post", joking that when the basketball was passed inside to McHale it disappeared because he rarely passed it back out to the perimeter. But in a win over the Dallas Mavericks on April 3, 1988, McHale played the role of passer, distributing a career-high 10 assists.
The Celtics won 57 games and made their fifth straight appearance in the Eastern Conference Finals. McHale shot 60% from the field and averaged a career playoff-high 25.4 points per game as Boston defeated the Knicks in four games and the Hawks in a seven-game semi-final series. He averaged 26.8 points per game and shot 56.3% from the field, including a game-tying three-point shot in overtime of game two, but Boston fell to the Detroit Pistons in six games in the conference final. Head coach K. C. Jones retired at season's end, and the Celtics of the Bird-McHale-Parish era would never again advance past the conference semi-finals.