 Complete the following phrase:  In 1975, Tonelli won the 100 m backstroke, 200 m backstroke and 200 m butterfly events at the Australian Championships. Although he won more individual titles than in the previous year, his times were slower; he completed the distances in 59.70 s, 2 m 10.50 s and 2 m 10.00 s respectively. Tonelli was also part of the Queensland team that successfully defended their medley relay title. Tonelli was thus selected for the 