Grand Slams:

Australian Open http://www.australianopen.com
Roland Garros http://www.rolandgarros.org
Wimbledon http://www.wimbledon.org
US Open http://www.usopen.org

Masters Series:

Masters Series http://masters-series.com
Indian Wells Masters - Pacific Life Open http://www.pacificlifeopen.com
Miami Masters - NASDAQ-100 Open http://www.nasdaq-100open.com
Monte Carlo Masters http://montecarlo.masters-series.com
Roma Masters - Telecom Italia http://www.internazionalibnlditalia.it/1/default.asp
Masters Hamburg http://www.dtb-tennis.de/AmRothenbaum/
Masters Canada http://www.rogerscupmen.com/portal/
Masters Madrid http://www.tennis-masters-madrid.com/eng/index.htm
Masters Paris - BNP Paribas Masters http://www.bnpparibasmasters.org
Masters Cup http://www.masters-cup.com

Davis Cup/Fed Cup:

Davis Cup http://www.daviscup.com
Federation Cup http://www.fedcup.com