Curious onlookers at the gates of St Stanislaus ground on Bandra's Hill Road partially block our view of what looks like a high-energy volleyball match between mixed teams of foreign and Indian players. As the crowd parts to give us way, we realise the players are on a massive inflatable court, giving them a springy surface to bounce off it. Just then, a player does a somersault and kicks the ball across the net, as a proficient striker would to score a goal in a game of football. A few more steps closer to the court and it emerges that the area closest to the net is fitted with a trampoline on either side, allowing one player from each team to go higher up than others, just as a gymnast would.