Citing an illness, American No. 1 Andy Roddick withdrew today from the Toronto Rogers Cup Tennis Masters, the tournament said.

After a loss last week to Gilles Simon in Washington, Roddick said, “I didn’t feel right physically, I didn’t feel right mentally. It was just a pretty bad effort.

“I’m a little concerned about that. Feeling lethargic and not all there energy-wise, that’s not fun for me. I don’t enjoy nights like tonight.

“It could be something simple, maybe a vitamin deficiency. I promise you I’m going to figure this out before I do that again. That’s not what I built my reputation around.”

Roddick was reported to undergo test over the weekend ahead of the Toronto event.

With Roddick out, Sam Querrey and Michael Russell remain as the only two Americans in the draw, and they play each other today. The news comes a day after the men’s rankings were with a Top 10 player for the first time in history.

Roddick is schedule to play in Cincinnati next week. Roddick is replaced in the draw by Paul-Henri Mathieu. Chile’s Fernando Gonzalez also withdrew with a left calf injury.

Filed under: Canadian Open
Tags: Andy Roddick, Fernando Gonzalez