This question is frequently asked during sales pitches for pool tables. A regulation-size pool table is, by definition, twice as long as wide. The phrase is used often, but the query usually refers to professional play. The majority of individuals who ask about this topic want to know what size table the pros use. A 9′ pool table is the only option in this situation. The 9-foot, 3-piece framed slate pool tables used for any professional BCA 8-ball, 9-ball, 10-ball, or One-Pocket competitions are twice as long as they’re wide.