Lonhro then headed to Melbourne for the Caulfield Guineas-Gr1 (1,600 m) but despite his four consecutive wins he was not the Hawkes' stable's favoured runner. That honour went to the multiple Group 1 winner Viscount, who had started his spring campaign in Sydney and won the George Main Stakes-Gr1 (1,600 m) where he, like Lonhro, defeated Shogun Lodge. In the Caulfield Guineas, the boom colts Ustinov and Viking Ruler also lined up along with New Zealander Pure Theatre, Dash for Cash and Magic Albert. Lonhro settled last before pulling out wide to the centre of the track to start his run on the home turn. Inside the final 50 metres, he swept to the front from Pure Theatre and Ustinov as Viking Ruler ran on near the rails. Lonhro won by 1½ lengths from Ustinov with Pure Theatre third.