Complex sentence: While it was introduced with the intention of stimulating the offensive flair of the teams, this rarely happened as the danger of conceding a goal from an opposition counter attack made teams reluctant to take risks.
Split into simpler sentences: While it was introduced with the intention of stimulating the offensive flair of the teams, this rarely happened. Ironically, the danger of conceding a goal from an opposition counter-attack made teams reluctant to take risks.