Abdul Hakim Sani Brown won the men's 100 meters in 10.05 seconds at the national athletics championships Saturday, tying the meet record and punching his ticket to this summer's worlds in London.

Despite rain-slick conditions at Yanmar Stadium, the 18-year-old convincingly came out ahead in a field that included three Olympic medalists for his first national title. He took 0.01 off his personal best, which he recorded twice on Friday in the heats and semifinals.

Trailing Sani Brown in second was Shuhei Tada (10.16) with defending champion Asuka Cambridge (10.18) snatching third despite a right-hamstring injury.

The laid-back Sani Brown was a cool customer amid expectations of Japan's first nine-second 100 that were all but dashed 10 minutes before the start, when the rain came pouring down.

"This is just one stop," Sani Brown said. "I want to put in the work to be able to do well at the world championships. I almost ran three personal bests here so it hasn't been bad. I'm in a good rhythm going into the worlds.

"I'm not training just to win at this meet. I've got other big competitions I want to do well at. I was never in any hurry for this because I'm trying to peak for August."

Sani Brown breezed through the 200 heats 3.5 hours prior to the 100, which turned out to be a good warmup for the teenager.

"I had the 200 heats today so I wasn't sure how I would feel," Sani Brown said. "But based on the result of the 100, I guess it was good I ran the 200 beforehand."

"I was really excited before the race because of the field we had. I'm not really the type who gets nervous. At about 70 meters, I knew I was in the lead."

Cambridge was limping after the race with his right thigh heavily iced, and was glad he barely qualified.

"I felt some pain after yesterday's semifinal," Cambridge said. "I thought I'd be able to run through it, but it bothered me. I still think I could have won it so it's frustrating. At least I made the team, though."

Cambridge's teammates from the Rio Olympic silver medal-winning 4x100 relay team, Yoshihide Kiryu (10.26) and Ryota Yamagata (10.39), finished fourth and sixth, respectively, and their place on the team for the Aug. 4-13 world championships now looks uncertain.

"Obviously this stings, but not talking to you guys doesn't change things," said Kiryu, who held the fastest time in the field of 10.01. "Athletics is all about trying to finish as high as you can. The reality is what it is."

Earlier, Shota Iizuka breezed into the 200 final with the best time of 20.40 from the heats.

Defending champion Iizuka met the qualifying standard for the worlds championships with the time. He won the race last year in 20.11, the second fastest time by a Japanese, behind Shingo Suetsugu's 20.03 national record.

In three women's finals, Yuki Ebihara won the javelin throw with 60.64 meters, Kaede Miyasaka the triple jump with 13.48 and Nanaka Kori the shot put with 15.82.