Tauranga sailor Peter Burling and Blair Tuke are assured of the 49er class gold medal after extending their margin today to become unbeatable in Thursday's medal race.

Sam's got his bronze, but sister Molly and crewmate Alexander Maloney are in for a scrap in the final of the 49er FX with Thursday's medal race deciding which of the four top crews will get what medals.

Peter Burling and Blair Tuke are almost quaranteed a gold after Thursday's race. Photo: NZ Olympic Team Twitter.

There is only one point separating first and fourth, and then a 28 point gap.

Tauranga's Jason Saunders and Gemma jones sailed the race of their lives with a brilliant medal race victory in the Nacra17 class, but their fate was determined by the order in which the other nations crossed, and they narrowly missed out on the podium and finished 4th.

Jo Aleh and Polly Powrie pulled out a stunning performance today, winning races eight and nine back to back, putting them in second place. After the two disqualifications this week they were seventh overall.

While second on 48 points they are 20 points behind Great Britain, and their final race will be against the USA on 49 points, France on 50 points and Japan on 52 points to decide silver and bronze.

Josh Junior was 4th in the Finn medal race and he wraps up the Rio Olympic Games with a 7th overall.

In the men's 470 Paul Snow-Hansen and Daniel Willcox have a place in the starting line-up for the Men's 470 class. They go in lying 9th overall.

49er Medal Race line-up (provisional) featuring Peter Burling and Blair Tuke

1. Peter Burling and Blair Tuke (NZL) – 33 points
2. Erik Heil and Thomas Ploessel (GER) – 67 points
3. Nathan Outteridge and Iain Jensen (AUS) – 70 points
4. Dylan Fletcher-Scott and Alain Sign (GBR) – 80 points
5. Jonas Warrer and Christian Peter Lübeck (DEN) – 92 points
6. Julien d'Ortoli and Noe Delpech (FRA) – 96 points
7. Yago Lange and Klaus Lange (ARG) – 97 points
8. Ryan Seaton and Matthew Mcgovern (IRL) – 103 points
9. Diego Botín le Chever and Iago López Marra (ESP) – 108 points
10. Lukasz Przybytek and Pawel Kolodzinski (POL) – 108.3 points

49erFX Medal Race line-up featuring Alex Maloney and Molly Meech

1. Tamara Echegoyen Dominguez and Berta Betanzos Moro (ESP) - 46 points
2. Martine Soffiatti Grael and Kahena Kunze (BRA) – 46 points
3. Jena Hansen and Katja Salskov-Iversen (DEN) – 46 points
4. Alexandra Maloney and Molly Meech (NZL) – 47 points
5. Sarah Steyaert and Aude Compan (FRA) – 75 points
6. Giulia Conti and Francesca Clapcich (ITA) – 76 points
7. Charlotte Dobson and Sophie Ainsworth (GBR) – 81 points
8. Annemiek Bekkering and Annette Duetz (NED) – 85 points
9. Paris Henken and Helena Scutt(USA) – 94 points
10. Victoria Jurczok and Anika Lorenz (GER) – 94 points

Women's 470 Medal Race line-up (provisional) featuring Jo Aleh and Polly Powrie

1. Hannah Mills and Saskia Clarke (GBR) – 28 points
2. Jo Aleh and Polly Powrie (NZL) – 48 points
3. Annie Haeger and Briana Provancha (USA) – 49 points
4. Camille Lecointre and Hélène Defrance (FRA) – 50 points
5. Ai Kondo Yoshida and Miho Yoshioka (JPN) – 52 points
6. Afrodite Zegers and Anneloes van Veen (NED) – 59 points
7. Tina Mrak and Veronika Macarol (SLO) – 65 points
8. Fernanda Oliveira and Ana Luiza Barbachan (BRA) – 68 points
9. Lara Vadlau and Jolanta Ogar (AUT) – 74 points
10. Agnieszka Skrzypulec and Irmina Gliszczynska (POL) - 96 points

Men's 470 Medal Race line-up (provisional) featuring Paul Snow-Hansen and Dan Willcox

1. Sime Fantela and Igor Marenic (CRO) - 27 points
2. Panagiotis Mantis and Pavlos Kagialis (GRE) – 38 points
3. Mathew Belcher and William Ryan (AUS) – 40 points
4. Stuart Mcnay and David Hughes (USA) – 67 points
5. Anton Dahlberg and Fredrik Bergström (SWE) – 69 points
6. Luke Patience and Chris Grube (GBR) – 69 points
7. Matthias Schmid and Florian Reichstädter(AUT) – 73 points
8. Sofian Bouvet and Jeremie Mion (FRA) – 79 points
9. Paul Snow-Hansen and Daniel Willcox (NZL) – 92 points
10. Yannick Brauchli and Romuald Hausser (SUI) - 92 points

NZL Sailing Team Results

Sam Meech (Laser) Bronze Medal Laser

Gemma Jones and Jason Saunders (Nacra) 4th

Josh Junior (Finn) 7th

Full results are available on the Rio 2016 website.

Tomorrow's schedule

Jo Aleh and Polly Powrie – W470 – Medal Race (1305 Brazil/0405 NZ)

Paul Snow-Hansen and Dan Willcox – M470 – Medal Race (1405 Brazil/0505 NZ)

Alex Maloney and Molly Meech – 49erFX – Reserve Day

Peter Burling and Blair Tuke – 49er – Reserve Day

In total, 380 sailors from 66 nations will race in 274 boats across ten Olympic Events across seven racing areas in Rio de Janeiro, Brazil.