Most singles titles Federer has won in a year?

Question

What is the highest number of singles titles that Roger Federer has won in a calendar year?

Answer 1

Federer’s best return was 12 singles titles in 2006. He won them at: the Tennis Masters Cup, Basel, ATP Masters Series Madrid, Tokyo, US Open, ATP Masters Series Canada, Wimbledon, Halle, ATP Masters Series Miami, ATP Masters Series Indian Wells, Australian Open and Doha.