Complex sentence: At the same time he established his highly successful eponymous bat-manufacturing company, during the early years Fearnley got many of his ex-playing colleagues and opponents to use his products introducing new forms of sponsorship he built the brand around these friends.
Split into simpler sentences: At the same time he established his highly successful eponymous bat-manufacturing company, during the early years Fearnley got many of his ex-playing colleagues and opponents to use his products. Introducing new forms of sponsorship, he built the brand around these friends.