This post is chronological from the top; scroll down to the bottom for the most recent updates. Earlier today, the U.S. men advanced to the 4x200 final and the U.S. women safely moved on to the women's 4x100 final. In addition to the men's 4x2 and women's 4x1, there are four more finals tonight: the men's 4x800 (where the U.S. has no alternate), the men's and women's 4x400s, and the mixed 4x400.

Tonight's winners:

Men's 4x800, U.S (7:13.16).: Brannon Kidder (1:47.39), Erik Sowinski (1:48.11), Cas Loxsom (1:48.48), Clayton Murphy (1:49.18)
Women's 4x400, U.S. (3:24.36): Phyllis Francis (50.42), Ashley Spencer (50.92), Quanera Hayes (50.66), Natasha Hastings (52.36)
Men's 4x200, Canada: 1:19.42
Men's 4x400, U.S. (3:02.13): David Verburg (45.28), Tony McQuay (45.26), Kyle Clemons (45.61), LaShawn Merritt (45.98)
Women's 4x100, Germany: 42.84
Mixed 4x400, Bahamas: 3:14.42

Yesterday, the U.S. won a DQ-ridden men's 4x100 and the women's 4x800, and Jamaica won the women's 4x200.

You can follow the live results here, and watch our interviews from the Bahamas here. And we'll be adding race videos here as they become available.

Men's 4x800m, 8:47 PM ET:
Here we go. The U.S. team of Clayton Murphy, Erik Sowinski, Cas Loxsom, and Brannon Kidder has to be the favorites. Former Penn Staters Loxsom and Kidder should be running with a little anger after their selections became implicitly controversial earlier this week.

I'm not in love with the body cam!! I do love that the announcers are calling Brannon Kidder "Brandon," though.

Kidder 1:48.2 split to hand off with the lead.

Former Villanova Wildcat Jordy Williamsz running for Australia on leg 2.

Kenya leading after the second leg, roughly a 1:47 high/1:48 low split from Sowinski. Another 1:48 from Cas Loxsom.

Clayton Murphy against Ferguson Rotich on the anchor baby! Rotich was fifth in the Olympic final behind Murphy's third.

Clayton's kick is so good, and so smooth. Another win for the USA.

Kenya second. I think all four U.S. men split 1:48, official splits coming soon.

Interview with "Nathan" Murphy now; Nathan works, imo.

THE REFUGEE TEAM GOT DQ'D!!!! COME ON!!!



Official splits:

Splits for @usatf in that tactical 4x800m:@BrannonKidder 1:47.39@eSowinski 1:48.11@cazzylox 1:48.48@Clayton_Murph 1:49.18

— Jon Mulkeen (@Statman_Jon) April 24, 2017

Cas and Sowinski were on the 2015 defending champs as well.



Women's 4x400m, 9:11 PM ET:
Gotta think the U.S. dominance continues here, though the major championships have been a little weird the last few years. They've won the last six Olympic finals but haven't won worlds since 2011. They have won the two World Relays in blowouts.

Montsho on the leadoff leg for Botswana is freshly back from a two-year doping ban.

U.S. already way ahead

Francis, Spencer, Hayes getting the job done with Hastings on the anchor

U.S. women win in a snoozer. Poland second. Official USA splits:
Francis 50.42
Spencer 50.92
Hayes 50.66
Hastings 52.36



Men's 4x200m, 9:29 PM ET:
U.S. men have never medaled in this event. Jamaica two-time defending champs. No Bolt here, but they didn't run Bolt on either of their two titles in 2014 and 2015.

Canada FTW!!! First-ever U.S. medal in second

Complete results. No official splits but that's Canada's first ever World Relays gold:



Damn, Ato is working hard. Walk-and-talking those interviews AND presenting medals. If you haven't watched or read MileSplit's interview with him, you should.

Women's 4x100 B final is on the track now. As we saw in the men's 4x100, if enough teams DQ'd from the A final, teams from the B final can finish in the top eight and automatically qualify for this summer's IAAF World Championships. The top three finishers in the B men's 4x1 ended up finishing in the men's top eight.



Men's 4x400m, 9:55 PM ET:
David Verburg, Tony McQuay, Kyle Clemons, LaShawn Merritt make up the lineup for the favored U.S. here.

All of the U.S. men's 4x4 dab when they're introduced, except for LaShawn Merritt https://t.co/wbd5Znw0aU pic.twitter.com/sGYrgf9mxK

— FloTrack (@FloTrack) April 24, 2017

U.S. men have won the last six world championships (dating back to 2005), three of the last four Olympics (with a loss to the Bahamas in 2012), and the last two World Relays. McQuay, Verburg, and Merritt were on the World Relays squads, and Merritt and McQuay ran in the Olympic final. Verburg and Clemons got gold medals from running in the prelims in Rio.

I believe that was Alabama's Steven Gayle who passed Merritt on the inside on the backstretch. Veteran anchor for Merritt as it felt like he was monitoring the people behind him the whole time and put away the race in the last ten meters. USA FTW, Botswana second, Jamaica third.



Women's 4x100m, 10:13 PM ET:
"It's not a game." -- English Gardner

U.S. women HEAVILY favored here with the Jamaicans not running Elaine Thompson. Jamaica has won the the last two world championships and the 2015 World Relays, but the U.S. took gold in Rio.

USA women drop the stick!

So actually, the U.S. women didn't drop it. Bartoletta wiped out in her lane--didn't look like she was impeded, though a protest might be filed--and didn't even get to Prandini. Stunning gold for Germany in probably the biggest upset of the meet. Jamaica second, China third.

Brutal trackside interview with the US women--three of who didn't even get to run--right now. Everyone is really relaxed, though. Bartoletta says she just ran the turn tight and wiped out on the wet track.

Mixed 4x400, 10:30 PM ET:
Curious to see who the Americans run here. Just a 35 minute break from the men's 4x4 on the schedule, but we are a bit behind schedule.

Mike Berry, Jaide Stepter, Paul Dedewo, Phyllis Francis for the U.S. Everyone but Francis fresh.

Huge hype in the stadium with iconic Olympic gold medalist Shaunae Miller running for the Bahamas. Most teams going man-woman-man-woman, though at least one is going M-F-F-M.

All men on the leadoff

All women on the second, including Shaunae Miller-Uibo

Gonna be a wild last two legs. USA going man-woman, Bahamas going woman-man

Correction: *Claudia* Francis anchoring

Bahamas (crowd going wild) FTW, USA silver, Jamaica bronze