Conseslus Kipruto and Evan Jager will return to the Prefontaine Classic on May 25 and 26 to renew their steeplechase rivalry at the IAAF Diamond League meeting in Eugene.
The field includes six of the top seven finishers from last year's World Championship in London and every IAAF Diamond Trophy winner since its 2010 inception.
World, Olympic and Commonwealth champion Kipruto has won medals at every international championship he has contested, dating back to the 2011 World U18 Championships.
The three-time Diamond Trophy winner was only 18 when he won his first Pre Classic race in 2013.
Olympic silver medallist Jager has been North America's best steeplechaser since first taking up the event in 2012.
The world bronze medallist recorded the fastest time in the world last year with 8:01.29, his fastest time since setting his third North American record of 8:00.45 in 2015.
After just missing an Olympic medal in Rio, Morocco's Soufiane El Bakkali finished in between Kipruto and Jager at last year's World Championships to take the silver medal.
The 22-year-old won at the IAAF Diamond League meetings in Stockholm and Rabat last year before setting a PB of 8:04.83 at the IAAF Diamond League final in Brussels.
Jairus Birech won the first of his two Diamond League trophies as a 21-year-old in 2014. Now 25, the Kenyan has twice broken the eight-minute barrier and is the field's second fastest at 7:58.41.
Paul Kipsiele Koech is history's third-fastest ever at 7:54.31 and no one has cracked the eight-minute barrier more times than his nine such clockings.
After a season of focusing on the marathon, the 36-year-old is returning to the steeplechase, the event in which he won the Diamond League's first three trophies.
Four Kenyans in the field will be making their US debut: Commonwealth silver medallist Abraham Kibiwott, world U20 champion Amos Kirui, Benjamin Kigen and Nicholas Bett.
Stanley Kebenei finished fifth at the World Championships last year. Earlier that season, he recorded a PB of 8:08.30 to move to second on the US all-time list. US compatriot Hillary Bor missed out on last year's World Championships final, but finished seventh at the 2016 Olympics.
Others in the field include USA's Andy Bayer, Canadian record-holder Matt Hughes, and Ethiopian teenagers Tesfaye Deriba and Getnet Wale.
2018 IAAF Diamond League calendar
4 May - Doha, QAT
12 May - Shanghai, CHN
26 May - Eugene, USA
31 May - Rome, ITA
7 Jun - Oslo, NOR
10 Jun - Stockholm, SWE
30 Jun - Paris, FRA
5 Jul - Lausanne, SUI
13 Jul - Rabat, MAR
20 Jul - Monaco, MON
21-22 Jul - London, GBR
18 Aug - Birmingham, GBR
30 Aug - Zurich, SUI
31 Aug - Brussels, BEL