"We have information-sharing agreements with both these bodies. Although the amounts involved were not unusual, the betting patterns were. Bloomfield was backed from an opening 1-2 on Betfair to a low of 1-10 pre-match, and this led us to contact the ITF."

Babcock would not confirm he had received information from bookmakers.

"We will not comment on information we receive unless there is something to report," he said. "Maybe just somebody was betting for a good reason."

The 23-year-old Bloomfield, who was knocked out in the first round at Wimbledon in 2003 and 2004, had never won a match on the main ATP Tour.

Berlocq, 23, who is more successful on clay courts than grass, was making his first appearance at Wimbledon. He told reporters after the match that he picked up a foot injury prior to last month's French Open, where he lost in the first round in straight sets to Ivan Ljubicic.

Bloomfield said he felt he had a good chance to win Tuesday because he plays a serve-and-volley game and Berlocq is primarily a baseliner.

Asked whether he had been confident enough to have bet on himself, he replied: "Definitely not, no. I'm not that kind of person. I'd actually hardly had a bet in my life. Don't know how to play poker. I'm not into that stuff."

Bloomfield dropped his second-round match Wednesday to Germany's Tommy Haas, losing 6-3, 6-4, 7-6 (4). He said he had not been contacted by tournament or Grand Slam officials.

"To be honest, other than the fact I played in a match against him (Berlocq), I don't think it has anything to with me," Bloomfield said. "I didn't see any indication during the match of anything unusual."