Complex sentence: Throughout his career, Bruch was known as being both outspoken and controversial and who readily changed his opinions on various matters, and represented around a dozen athletics' teams, including his own IK Diskus.
Split into simpler sentences: Throughout his career, Bruch was known as being both outspoken and controversial. He readily changed his opinions on various matters, and represented around a dozen athletics teams, including his own IK Diskus.