Usain Bolt, Justin Gatlin set up 200m final showdown at world championships

Usain Bolt and Justin Gatlin will meet again in the 200-metre final at the world track and field championships after both men won their respective semifinal heats Wednesday in Beijing.

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Bolt was grinning widely after crossing in 19.95 seconds, coasting for about 60 meters and checking the stadium screens high up in the stands of the Bird's Nest to see if someone could come close. As usual, none did.

In the previous semifinal heat, Gatlin, unbeaten over two years in the 200, ran 19.87 seconds but worked a little longer than Bolt before easing up.

Bolt is trying for his fourth consecutive 200m world title. He won the 100m crown for the third time on Sunday, edging Gatlin at the line by 0.01 of a second.

The 200m final can be seen live on CBCSports.ca on Thursday at 8:55 a.m. ET.

"I'm looking forward to it," Bolt said. "This is my favourite event."

Canada's Brendon Rodney did not advance. The Brampton, Ont., native, who ran a personal-best 20.18 in Tuesday's heats, finished last in his semifinal group in 20.46.

Campbell-Brown DQ'd, Canadians advance

In the women's 200 heats, Veronica Campbell-Brown rounded the curve and kept going and going, straight into the next lane.

The Jamaican started in Lane 5 and wound up in Lane 6. She won her heat, but running out of your lane leads to disqualification.

British sprinter Margaret Adeoye was shocked to see Campbell-Brown suddenly appear in front of her.

Campbell-Brown, the 2011 world champion in the event, didn't stop to talk after her mistake, saying she was, "having a headache."

Two of the three Canadians entries advanced to the semifinals. Kimberly Hyacinthe and Khamica Bingham both finished third in their respective heats to earn an automatic qualifying spot.

Crystal Emmanuel was fourth in her heat and fell short of one of the three wild-card spots given to the three fastest runners who finished outside the top three in their heats.

Van Niekerk hospitalized after win

Wayde van Niekerk was discharged from the hospital where he was under observation for exhaustion after winning his first world championship title in the 400 meters on Wednesday.

Despite a lightning quick start, van Niekerk still held off defending champion LaShawn Merritt and Olympic gold medalist Kirani James to win gold. After finishing in 43.48 seconds for the sixth-fastest time in history, he collapsed on the track and had to be taken to the hospital for observation.

Just over two hours after his win, he was discharged from hospital, the IAAF said.

Yego wins javelin with stunning throw

Julius Yego of Kenya recorded the longest javelin throw in 14 years with a mark of 92.72 meters to win his first world championship gold medal.

Yego was in eighth position before his third attempt in the final, when he landed chest-down behind the line after unleashing the world-leading throw.

The world record of 98.48 meters was set in 1996 by Jan Zelezny of the Czech Republic, who also set the championship record at 92.80 in 2001.

It was the first time in history five throwers recorded marks beyond 87 meters in a championship final.

Ihab Abdelrahman El Sayed of Egypt briefly held the lead at 88.99 and finished with the silver medal. Tero Pitkamaki of Finland, the 2007 world champion, took bronze at 87.64, followed by Thomas Roehler of Germany (87.18) and Antti Ruuskaen of Finalnd (87.12).

The 26-year-old Yego entered the meet with a pesonal best of 91.39, the world-leading mark of the year.

Yego was the first Kenyan to reach an Olympic final in a field event at the 2012 London Games, the same year he won an IAAF scholarship to train in Finland.

Hejnova repeats in hurdles

Zuzana Hejnova of the Czech Republic defended her world title in the 400-metre hurdles with a world leading run of 53.50 seconds.

Hejnova came back strongly after missing the 2014 season after breaking a bone in her left foot.

Shamier Little of the United States got silver from the tight inside lane .44 seconds behind the Czech, edging teammate Cassandra Tate, who finished in 54.02.

Commonwealth champion Kaliese Spencer of Jamaica stumbled early in the race and finished last.

Silva takes pole vault gold

Yarisley Silva of Cuba cleared 4.90 metres on her third attempt in the pole vault to secure her first world championship.

Silva was a silver medalist at the 2012 London Olympics, missing out on gold in a countback.

Fabiana Murer of Brazil, the 2011 world champion, held the lead when she cleared 4.85 at her first attempt but missed all three attempts at the next height.

Nikoleta Kyriakopoulou of Greece missed her first attempt at 4.85 and, with a bronze medal guaranteed, passed her next attempt at that mark and moved to the next height but failed twice more.

American teammates Jenn Suhr, the Olympic champion, and Sandi Morris finished in a share of fourth place after failing to clear 4.80.

Jepkemoi outkicks steeplechase rivals

Hyvin Kiyeng Jepkemoi of Kenya won a three-way sprint to the line to take the gold medal in the 3,000-metre steeplechase ahead of Habiba Ghibri of Tunesia and Gesa Krause of Germany.

Over a tight last lap, Ghribi stumbled ahead of one barrier and once the last water pit was passed, the finishing kick made the difference with Jepkemoi coming from behind to win in 9 minutes, 19.11 seconds.

Ghribi got silver, .13 seconds behind, and beat Krause by .01.