There's no champagne on these polo grounds, and this certainly isn't the sport of kings. Bike-polo spectators guzzle beer and taunt players during the decidedly down-market variation of the sport.Horse polo is played on a carefully maintained field, but bike polo takes place on tennis courts with temporary recycled plywood for rink boards and mallets made from recycled ski poles.Conceived by Irishman Richard Mecredy, who started velocipede polo in 1891, the sport then peaked as a demonstration sport in the 1908 Olympic Games. More than 100 years later, the sport is still growing and this past Sunday Vancouver hosted 32 teams at the Cascadia Regional as they took part in a qualifier for the upcoming worlds in Milwaukee this July. John Lehmann, The Globe and Mail's Vancouver-based staff photographer, was there as the mallets swung and the beer - not bubbly - flowed.