Paul Dergarabedian: 2018 summer box office

Box office guru Paul Dergarabedian, senior media analyst for comScore, joined me and Rhod Sharp on BBC Radio 5 Live for our annual summer movie preview. With much to talk about in a year that's already smashing records, we started with the blockbuster performance of Marvel Studios' Avengers: Infinity War - the biggest cinematic opening of all time, in April 2018.

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