 Complete the following phrase:  Despite his talent and goalscoring prowess, Rivas career was blighted by several major injuries, in particular with the Italian national side, and which greatly limited his playing time in later seasons; he missed 35 games in the five seasons leading up to 1971, and only appeared in 24 matches for Cagliari between 1974 and 1976, which saw an overall decline to his goalscoring rate and the clubs performances during this period. During the 