This year's meet should be titled "The Greatest 3 Hours in Track & Field." In addition to a dream 800 and a world record attempt in the 1500, Evan Jager seems poised to take down the AR in the men's steeple. Might there also be an AR in the women's 5000 where Americans Molly Huddle, Shannon Rowbury, Kim Conley and Jordan Hasay will take on Genzebe Dibaba. The women's 800 is loaded as Ajee Wilson, Laura Roesler and Molly Beckwith-Ludlow battle Eunice Sum. There's also Tyson Gay and Justin Gatlin against Panama's Alonso Edward in the 200 and a high jump featuring five of the top 12 jumpers of all time.  *IAAF Preview
Also Nick Willis, Matt Centrowitz.