Boom! Boom! The World vs. Boris Becker review - ups and downs of a tennis legend

Alex Gibney's documentary about the disgraced German tennis star has wonderful archive footage and interviews but is ultimately unrevealing about its subject Despite some great archive material and nice interview turns, this documentary portrait of disgraced German tennis legend Boris Becker from film-maker Alex Gibney is a frustrating and disappointing experience - because of the baffling way it is structured, both unrevealing and anticlimactic. It starts at the end, swoops back to the beginnin...