Wow. Tremendous race from Simpson, knocking another second off her best and getting so close to Decker (and you cannot say "drug cheat" about her American record when it occurred something like a decade before a testosterone reading that was ultimately thrown out many years after she was relevant in competitions). And congratulations to Shannon Rowbury as well for finally breaking 4. Her pr's were 2/4/8:31/15, so even Salazar said that it was a major goal to break those time barriers. Surprising to see Aregawi so far back (did she fall?), but for Simpson this is tremendous to beat both Obiri and Kipyegon, as well as Aregawi, and Simpson has the guts very few other runners have, as she is not going to sit back with the field and either let the pacers go or even let the pace slacken.