There may be a debate about whether Caster Semenya should be allowed to compete, but there was no debate about who the best women's 800 runner was in 2016. American Kate Grace returned from injury with a career year, fulfilling her "dream, dream goal" of making the Olympic final in Rio, but was that enough to crack our world top 10?

Day 2 of the London Anniversary Games was full of quality.

The last DL meet before the Olympics is a 2-day affair. We break down both days (Bolt day #1), (Farah day #2) for you free of charge. The meet features a lot of US 4th placers including Ludlow, Eccleston, Kipp, Manzano, Jenkins and 5th placers (Sowinski, Uceny, Garcia) trying to get over their Trials disappointments.

A tangle of limbs on the final turn saw Brenda Martinez lose her momentum and Montaño fall to the track. Grace took advantage, riding the rail to victory in 1:59.10 as Ajee Wilson (1:59.51) and Chrishuna Williams (1:59.59) joined her on Team USA. Molly Ludlow missed out by an agonizing .04, taking 4th in her second consecutive Trials.

Ajee Wilson, Alysia Montano and Brenda Martinez have all starred on the international stage before. Will they make it to Rio? Not necessarily, as 12 Americans this year have run between 1:59.72 and 2:00.82.

There were some fast times at the inaugural adidas Boost Boston Games on Friday.

Are you ready for the start of the 2016 professional track and field season? You'd better be as the 2016 IAAF Diamond League season starts on Friday with a big bang and A TON of awesome races that feature clashes between the very best in the World: #1 Kiprop vs. #2 Manang'oi in the 1,500, #1 Birech vs. #2 Kipruto and #3 Kemboi  in the steeple, #1 Sum vs. #1 Semenya in the 800, and #1 Ayana vs. #1 Cheruiyot in the 3,000. There's also Mutaz Essa Barshim vs. Derek Drouin in the high jump, Tori Bowie vs. Dafne Schippers in the 200, Omar McLeod vs. Aries Merritt in the 110 hurdles. Plus Sandi Morris (PV), LaShawn Merritt (400) and Christian Taylor (TJ).

Men's 800 features Duane Solomon, Brandon Johnson, former NCAA champ Edward Kemboi, Lopez Lomong, Ryan Martin, Eliud Rutto and David Torrence while the women's has Roesler, Molly Ludlow, Oregon's Raevyn Rogers, former NCAA 1500 champ Shelby Houlihan. Vashti Cunningham makes her pro debut in the HJ, Allyson Felix highlights the sprints.

Eunice Sum nabs the top spot as the only race she lost all year was Worlds. Our US #1 Alysia Montano cracks the world top 10.

24 women, 10 PRs and no Americans in the final. The three women's 800 semifinals were insane as Canada's Melissa Bishop led all the qualifiers in 1:57.52 (a two-second PR!). Americans Molly Ludlow and Brenda Martinez went home as the final time qualifier was a ridiculous 1:58.35.

Montaño went down with 200 to go in her heat and her protest was unsuccessful so she'll sit out the semis and final. Molly Ludlow was only sixth but her heat was by far the fastest on the day and she made it in on time (2:00.70) while Brenda Martinez had to work for it in the final 100 after being boxed in. Ben True comfortably grabbed an auto qualifier in heat 1 of the 5,000 while Ryan Hill and Galen Rupp made it on time in a much faster heat 2.

Wit Ajee Wilson out, no one without internal testicles stands a chance against Eunice Sum, but should she be nervous give the recent CAS ruling? As for who medals behind Sum, it's wide open and our friend in Britain and Canada are dreaming of medal(s).

With the Kenyan World Champs Trials this weekend, the mid-d/distance fields aren't quite as strong, but that opens the door for a slew of Americans. In the 1,500, Ayanleh Souleiman and Matthew Centrowitz will battle as Robby Andrews makes a rare DL appearance. Brenda Martinez, Molly Ludlow and Chanelle Price are all in the 800 and is there any way Andy Bayer can win the steeple?

The men's 800 (Rudisha vs. Amos Rematch + Berian and Loxsom) and mile (Kiprop vs. Souleiman as Centro, Leo and Blankenship try to go sub-3:50) are the crown jewels of the Saturday action. Other action includes Molly Huddle vs. Mercy Cherono in the 5,000, Eunice Sum vs. Brenda Martinez in the 800 and an African showdown between Isaac Makwala (#5 all-time) and Wayde van Niekerk (#11 all-time) in the 400.

What will Tuka do coming off his huge 1:42 victory in Monco? Will 1:57 woman Buchel keep her almost perfect season going? Asafa Powell highlights some decent sprint races.

Lomong got the win in 7:42.19 to Lagat's 7:42.75. Andy Bayer was 6th (7:48.49). Switzerland's Selina Buchel took the 800 in 1:59.21, beating Chanelle Price by .03.

A lot of Americans competing including Bernard Lagat, Will Leer, Ben Blankenship, Garrett Heath, Lopez Lomong, Andy Bayer in the 3000, Charles Jock, Chanelle Price, Molly Ludlow, Gabriele Grunewald in the 800s. Also Melissa Bishop, Jenny Meadows and Lynsey Sharp. Asafa Powell and Yohan Blake are both in the 100, albeit in different heats. *Live Results

Fresh off a great run at the U.S. Champs, Evan Jager, Donn Cabral and Dan Huling face a stacked steeple field led by '14 world #1 Jairus Birech and world/Olympic champ Ezekiel Kemboi. Taoufik Makhloufi, who ran 2:13.08 for 1,000 on Wednesday, takes on stalwarts Ayanleh Souleiman and Silas Kiplagat.