Grand Slam (PBA)

A team's Grand Slam in the Philippine Basketball Association (PBA) is winning all three conference championships (tournaments) in a single season. As of 2014, this has been accomplished five times by four teams and four coaches since the league's inception in 1975.

In the 1970s, 1980s, and 1990s, at least one team swept the championships in one season. The decade 2000–2009 had no Grand Slam winner because of adjustments to the league calendar in 2004, in which the start of the season was moved from January to October and the number of conferences per season was reduced from three to two. The three-conference season format was reinstated in the 2010–11 season.

In the league's second season, the Crispa Redmanizers became the first team to win all of the conference championships in a single season. Before the start of the 1976 season, they had won the All-Philippine Championship, the third conference of the PBA's maiden season. The Redmanizers won all of the 1976 season conferences—the All-Filipino (reclassified as the First Conference in 2010), the Open (reclassified as the Second Conference), and the All-Philippine Championship—with an overall season record of 47-15. All of their championships were won against the Toyota Comets, who have been the Crispa Redmanizers' rivals since both teams played in MICAA. The Crispa Redmanizers' team was composed of future Hall of Famers Bogs Adornado, Atoy Co, Abet Guidaben, and Philip Cezar, and was coached by Baby Dalupan.

Crispa Redmanizers achieved the Grand Slam again in the 1983 season. The team still comprised many of the same players as the 1976 Grand Slam team, but they were now coached by former U/Tex Wranglers tactician . Crispa began the season by winning 12 consecutive games in the All-Filipino Conference, losing only their first game to Toyota in the start of the elimination round. They finished the elimination round with a 7–1 record, then won all of their playoff games, including their best-of-five series against Gilbey's Gin Tonics. The team's winning streak continued into the next conference, the Reinforced Filipino Conference, as Crispa won their first nine games in the elimination round and ended their streak with 21 wins. Also this conference, they hired former Portland Trail Blazer player Billy Ray Bates as their import. Crispa Redmanizers have won the conference championship against former Redmanizer Bogs Adornado and the Great Taste Coffee Makers by three games to two.

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