The personal best comes from the Olympic final, where David Rudisha broke his own world record in London. With Rudisha not competing due to a knee injury, the competition in Moscow will be without the Olympic gold and silver medalists.
Following Amos' news, Nick Symmonds put out the following tweet.
Symmonds (1:43.67) expects to contend for a medal in Moscow along with current world leader Duane Solomon (1:43.27). Mohamed Aman of Ethiopia (1:43.33) and Ayanleh Souleiman of Djibouti (1:43.63) pose the biggest international threats as they have run the second and third fastest times of 2013.
Sad to hear about all of the injured 800m runners this year. Wishing them quick recoveries. My durability is finally coming in to play!— Nick Symmonds (@NickSymmonds) July 29, 2013
The first round of the men's 800-meter dash will take place on August 10.