American veteran Elana Meyers Taylor and Jadin O'Brien have just taken to the track.
Their time of 57.14 seconds puts them into fifth - but it is still very early days.
Compatriots Kaillie Armbruster-Humphries and Jasmine Jones set a track record time of 56.92 seconds in this first heat so that is the time to beat so far.
Team GB's Adele Nicoll spoke openly about her disappointment following her 18th-place finish in the monobob earlier this week.
But, the 29-year-old said the two-woman event is her preferred one and she will pilot the sled this evening with brakewoman Ashleigh Nelson.
Both women are dual athletes with Nicoll also competing in the shot put while Nelson is a former sprinter and becomes only the second British woman to compete at the summer and winter Olympics.
Heat one is under way, followed by the second at 18:50 GMT.
'McDavid the best on the planet'published at 17:04 GMT 20 February
17:04 GMT 20 February
Men's ice hockey semi-finals - Canada 1-2 Finland
Kent Simpson Ice hockey co-commentator on BBC One
Image source, Getty Images
Connor McDavid is having some tournament. The hockey world was fully aware of what he was capable of. The casual fan is now realising he is the best on the planet.
American bobsleigh veterans using 'mum power'published at 17:04 GMT 20 February
17:04 GMT 20 February
Bobsleigh - two-woman
Jess Anderson BBC Sport in Cortina
One to watch out for this evening in the two-woman bobsleigh is American veteran Elana Meyers Taylor, who finally took Olympic gold in the monobob a couple of nights ago to add to the three silver and two bronze medals she has already won across two events.
The 41-year-old could make it an even more successful Games over the next couple of days.
Compatriot Kaillie Armbruster-Humphries also pilots her own sled this evening and will be another one to watch having won medals at the last five Games.
Both women are here with their children and will be drawing on that extra special 'mum power' to help them through.
Canada halve deficit on power playpublished at 16:58 GMT 20 February
16:58 GMT 20 February
Men's ice hockey semi-finals - Canada 1-2 Finland
Ooof, that'll hurt.
A high stick from Anton Lundell catches a Canadian opponent in the chin - unintentionally, it seemed - and he will spend the next two minutes in the penalty box.
And Canada make the most of the power play! Sam Reinhart deflects in a shot to score!
About five minutes of the second period left to play.
Japan's Miho Takagi is in the final group. She has back-to-back silver medals in this event and she has made it very clear she wants to upgrade them to a gold in Milan.