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LSU’s Nethaneel Mitchell-Blake competes in the LSU Alumni Gold meet held Saturday, April 22, 2017.

CONTRIBUTED PHOTO BY Bryan Wayne/LSU Athletic Communications

Racing on his home soil, former LSU All-American Nethaneel Mitchell-Blake produced the second-fastest time of the 200-meter preliminary heats Monday at the IAAF world championships in London.

Mitchell-Blake, the reigning British champion at 200 meters, qualified for Wednesday’s semifinals when he claimed his preliminary heat in 20.08 seconds. That turned out to be the second-fastest time of the day behind the 20.05 clocked by Trinidad & Tobago’s Jereem Richards.

Mitchell-Blake, a nine-time All-American for the Tigers from 2013-17, also represented Great Britain in the Rio de Janeiro Olympics last summer.

Meanwhile, former LSU standout Cassandra Tate, who won the NCAA 400-meter hurdles title in 2012 before going on to win bronze at the 2015 worlds, automatically advanced through the heats in her signature event.

Tate, a Loranger native, finished third in her preliminary heat Monday in 55.48 seconds and moved on to Tuesday’s semifinals as the top four finishers in each heat advanced.

In addition to Tate, former LSU teammate Kimberlyn Duncan will compete Tuesday in the preliminary heats of the women's 200 meters.

Duncan, who was on the U.S. world championships team in 2013, qualified this year as the second-place finisher in the 200 at the U.S. championships after failing to qualify for worlds in 2015.

Also Tuesday, Lafayette High School pole vaulter Armand “Mondo” Duplantis will try to make history again when he competes in the finals at 1:35 p.m. The 17-year-old earned a spot in the finals and a chance to vie for a medal when he was eighth in Sunday’s qualification.

In doing so, Duplantis became the youngest athlete to advance to the pole vault final since the world championships were first held in 1983. Duplantis, who this spring set a world junior record of 19 feet, 4¼ inches, was one of eight athletes to clear 18-8¼ on Sunday before the competition was shut down once the 12 finalists were identified.

Follow Sheldon Mickles on Twitter, @MicklesAdvocate.