During his 6-1, 7-5, 7-6 (3) first-round loss to Andy Roddick on Monday, the 155th-ranked Gimelstob invoked the "Hawk-Eye" challenge system to check one of his serves that was called wide in the first set.

He lost that, too.

"I'd like to have a few more important records, but I'll take what I can get," said the American, who watched on one of the new courtside video screens when the replay showed it was, indeed, a fault. Several fans groaned in unison.

The challenge system is making its Wimbledon debut this year on Centre Court and Court 1. Its Grand Slam debut came at last year's U.S. Open.

There were a total of 16 challenges made Monday, with four calls getting overturned.

The 30-year-old Gimelstob had back surgery in September and figures this might be his final year on tour. That's why the results of his matches are less important than the experiences right now.

"It's a cliche, but it's so amazing out there, and I couldn't help but think a little bit towards the end of the match that this most likely is my last time I'll ever be on the court playing singles here," Gimelstob said.

"I kind of made a deal with the devil hoping to get through one more year," Gimelstob said. "After the U.S. Open last year it was very possible that my career was over."

Monday's match was played against a longtime friend. Gimelstob played doubles with Roddick's older brother as juniors.

"I have a ton of respect for Andy, personally and professionally, so I hope he goes on and wins the tournament," Gimelstob said.

He and Roddick made some friendly wagers about how the match would go -- including Roddick's first-serve percentage and the number of dives Gimelstob would make.

Using "Hawk-Eye" wasn't a subject of the gentlemen's bets.

"But when he did it, I thought of that," Roddick said. "So he has the first miss with 'Hawk-Eye' in Wimbledon history, as well."

HINGIS RALLIES
The "graveyard of champions" nearly claimed another victim Monday at Wimbledon.

Martina Hingis, the 1997 champion at the All England Club, needed to save two match points to beat British wild card Naomi Cavaday 6-7 (1), 7-5, 6-0.

"I was just like, 'No, this is not going to happen to me, not here again at Wimbledon,"' Hingis said. "I never lost on Court 2. I know it's a 'graveyard of champions,' but it's never been to me."

Hingis had not played since losing at the German Open in early May because of hip and back injuries.

"I don't want to miss out on Wimbledon no matter what happens," the ninth-seeded Hingis said. "It's about me taking the responsibility how far I want to take it. I'm trying to do everything possible."

Reflecting on her 1997 Wimbledon title, Hingis said she was happy to still be playing.

"The older you get, probably the more fears you have," Hingis said. "I was totally, like, pleased with myself. You think the whole world belongs to you."

After losing the first set, Hingis trailed 5-4 in the second, when Cavaday twice was one point from ending the match. But Hingis took the final nine games.

The 232nd-ranked Cavaday was torn after letting her big lead slip away -- something she might hear about from her mother, who happens to be a sports psychologist.

"It's difficult when it's your mom saying these things to you about tennis matches," Cavaday added. "I know she's there if I need her, but I tend not to use her, really."

HENMAN HANGS ON
Much to the home fans' delight, Tim Henman hung on to play another day at Wimbledon.

The four-time semifinalist, long considered Britain's best hope to win a title at the All England Club, was locked in a tight first-round match against former No. 1 Carlos Moya when play was suspended because of darkness at 5-5 in the fifth set Monday night.

Henman trailed by a set, then was down a break in the fifth, but managed to prolong the match. The fans on Centre Court cheered wildly -- some even standing to applaud -- when Moya double-faulted to get broken to 4-4 in the decisive set.

After Henman held to go ahead 5-4, he wasted four match points, and Moya wound up holding serve. That's when the players met at the net and agreed it was too hard to see.

Henman lost in the second round at Wimbledon the last two years.

The last British man to win the championship at Wimbledon was Fred Perry in 1936.

POLICE REPORT
Even though police said there were no specific threats to players or spectators for Wimbledon, they are putting extra precautions in place this year -- particularly with an eye to making sure the Royal Box isn't a target now that Centre Court is without a roof.

The Civil Aviation Authority will alert police if any nearby aircraft raise suspicions.

"Every year we do change our tactics slightly," Metropolitan Police superintendent Pete Dobson said Monday. "We renew them and we refresh them. But mainly we change our tactics so if someone was trying to attack the venue they have something new to defeat every year."