Following are the results from the opening day of the 3.6 million US dollar ATP Tour world championship tennis tournament in Hanover of Germany on Tuesday ( prefix number denotes world ranking):

Red group:

5-Pete Sampras, United States bt 3-Gustavo Kuerten, Brazil, 6- 2 6-3

1-Andre Agassi, United States, bt 8-Nicolas Lapentti, Ecuador, 6-1 6-2 (Xinhua)