By Piers Newbery
BBC Sport at Wimbledon
Tim Henman will be the focus of attention on day two of Wimbledon as he takes on Spain's Ruben Ramirez Hidalgo.
Tournament officials will be hoping for better weather than Monday but the forecast is not good.
Henman's match is the first on Number One Court, while Greg Rusedski takes on Davide Sanguinetti and second seed Andy Roddick faces qualifier Yeu-Tzuoo Wang.
Women's top seed Serena Williams, Amelie Mauresmo and Jennifer Capriati are all in action.
Serena is first on Centre Court at 1300 BST, with Roddick to follow.
Henman is in confident mood after a superb run to the French Open semi-finals and is expected to be too strong for qualifier Hidalgo.
"With the way my attitude's changed over the last six or seven months, when I step on the court for every match I think I can win," said Henman.
"I think I'm going to win if I play my style. I can beat every player out there. That's definitely my attitude."
After a difficult year Rusedski is simply happy to be back at the All England Club.
"I'm feeling really good, my form is coming together well," said Rusedski.
"I am feeling great about Tuesday's game and am really looking forward to starting the tournament."