Tennis superstar Roger Federer has responded to growing criticism of his sponsorship partnership with bank Credit Suisse, which was exacerbated by climate activist Greta Thunberg.
A dozen climate activists have gone on trial for storming a Credit Suisse office in Lausanne, Switzerland, and playing tennis inside, part of a protest against the bank's investments in fossil fuels.
The activists whacked tennis balls - an allusion to Federer - and urged him to break his connection with the institution holding banners reading, "Credit Suisse is destroying the planet. Roger, do you support them?"
Lawyers of the activists claim they were acting as whistleblowers for the climate emergency and will appeal any fine that may be handed out.