On Saturday morning, it will be time to turn off the cartoons and tell the kiddos they'll be watching track as the Shanghai DL starts at 7 am ET. If you don't have kids, maybe the exciting action will put you in the mood to start a family. 

The greatest 800 runner ever is our pick for #1 again. There are two Americans in the top 10, but where do Murphy and World Indoor champ Boris Berian rank against the world's best?

Conseslus Kipruto and Almaz Ayana will go for the world records. Can Shannon Rowbury follow up her Zürich win with an AR in the 5,000? Plus Kiprop vs. Makhloufi in the 1500, Clayton Murphy in the 800 and Elaine Thompson vs. Dafne Schippers in the 100.

No man has repeated in the 800 at the Olympics since New Zealand's Peter Snell in 1960 & 1964. Defending world champ Rudisha enters as the world leader and favorite, but he'll be challenged by Kenyan Trials champ Alfred Kipketer, 2015 Worlds runner-up Adam Kszczot, France's Pierre-Ambroise Bosse and many more.

Omar McLeod's unbeaten streak came to an end as Wayde van Niekerk's continued at the Monaco DL meeting which took place less than 24 hours and 20km away from the horrific terrorist attack in Nice, France.

Can Team USA upset Team Kenya, which nearly coughed up a huge lead last year? If you were the Team USA coach, who would you anchor? Robby Andrews or Duane Solomon?

Kszczot followed up his victory at Europeans by taking down Nijel Amos in the 800 in a negative-split 1:45 while Emma Coburn was just third in the steeple in 9:20. Allyson Felix and Queen Harrison got wins in the sprints while Nesta Carter won the 100 in 9.96. In the field events, Reese Hoffa won to extend his lead in the DL standings while France's Renaud Lavillenie's 20-meet win streak is history after he failed to clear a height on a poor night for jumping. Plus a B-heat victory for Leo Manzano.

Kenya's dominance in these events extended to the junior ranks as Kenyans went 1-2 in both races. American Tre'tez Kinnaird was sixth in the 800 while Bailey Roth was 10th in the steeple and re-broke his U.S. high school record that he set in Friday's prelims. 

Kinnaird ran 1:48.04 to put himself in contention for a medal.

The prelims of the men's 3,000 steeplechase were also held today and Arizona signee Bailey Roth set a U.S. high school record of 8:48.60 to advance to the final (Roth also holds the record in the 2,000 steeplechase at 5:41.67).

The US is led by the best guy in the field on paper, 1:42.72 man Duane Solomon. Kenya is led by a 17-year old who has never raced on the pro circuit and only broken 1:48 twice in his life. Big USA advantage, right? Think again. *MB: Can the US win gold? *MB: Is this the most entertaining 800 ever run?