SHANGHAI, Oct 28 (Reuters) - Sweden's Peter Hanson capitalised on the early errors of playing partner Rory McIlroy to hold on for a one-shot victory over the world number one at the BMW Masters on Sunday Overnight leader Hanson posted a final round 67 for a 21-under-par total on the Lake Malaren course to capture his second European Tour success in three events and move behind Briton McIlroy at ...