In March 1975, West Germany – the newly crowned world champions – came to London’s Wembley Stadium for a friendly against England.

Among the German squad was a 28-year-old striker who’d already attracted a lot of attention from the British media: not because he’d been hailed as the new Gerd Müller, Germany’s legendary goal scorer, but because of the colour of his skin.

Erwin Kostedde was the son of a white German mother and a black US soldier, and he had been on the receiving end of racism for most of his life – even during what he considered to be the best years of his career, at Kickers Offenbach.

He talks to Kristine Pommert about how racist taunts from supporters and even fellow players affected his game – and how he feels about being a trailblazer for young black players today.

A CTVC production for the BBC World Service.

Eye-witness accounts brought to life by archive and testimony. Sporting Witness is for those fascinated by sporting history. We take you to the events that have shaped the sports world through the eyes of the people who were there. For nine minutes, you become a fan in the stands as we take you back in time to examine memorable victories and agonising defeats from all over the world. You’ll hear from people who have achieved sporting immortality, or those who were there as incredible sporting moments unfolded.

Recent episodes explore the forgotten football Women’s World Cup, the plasterer who fought a boxing legend, international football’s biggest ever beating and the man who swam the Amazon river. We look at the lives of some of the most famous F1 drivers, tennis players and athletes as well as people who’ve had ground-breaking impact in their chosen sporting field, including: the most decorated Paralympian, the woman who was the number 1 squash player in the world for nine years, and the first figure skater to wear a hijab. You can learn all about fascinating and surprising stories, such as the tennis player who escaped the Nazis, how a man finally beat a horse in a race, and how the FIFA computer game was created.