Swimmer Erika Fairweather attempts to reach her second final, the women triathletes Nicole van der Kaay and Ainsley Thorpe are in action, while Peter Burling and Blair Tuke defend their Rio Olympics sailing title.
Here's who to watch today.
Erika Fairweather after the 400m freestyle heats on Sunday. Photo: Photosport Ltd 2021
Triathlon
Following Hayden Wilde's bronze medal yesterday, it's the turn of the women to take to the Odaiba Marine Park course.
Nicole van der Kaay and Ainsley Thorpe are in the women's individual race at 9.30am.
Swimming
The Dunedin 17-year-old Erika Fairweather will attempt to reach her second final at Tokyo after finishing eighth in the 400 freestyle yesterday.
She competes in the women's 200m freestyle semifinals at 1.30pm.
Zac Reid competes in the men's 800m freestyle, heat 2 at 11.21pm
Rugby Sevens
New Zealand started with wins over South Korea and Argentina on day one and will play Australia and a quarter-final today.
All Blacks Sevens v Australia (men's pool A) starts at 1.30pm.
The Sevens are likely to play the USA in the quarter-finals, from 8.30pm.
David Nyika Photo: PHOTOSPORT
Boxing
Men's heavyweight (round of 16).
David Nyika, twice a Commonwealth Games champion, finally gets to compete at the Olympics before switching his focus to professional boxing.
Nyika v Youness Baalla of Morocco - 3.51pm
Canoe Slalom - women's K1
Luuka Jones Jones won silver in this event at Rio 2016
Jones is in the semifinal at 6pm and the final is at 7.15pm
Hockey
Black Sticks men v Japan (men's pool A) at 2.45pm
The New Zealand men have a win and a loss so far in their pool
Peter Burling and Blair Tuke head out for a training session ahead of the Tokyo Olympics. Photo: Andrew Cornaga/Photosport
Sailing
Alex Maloney & Molly Meech (49erFX) won the silver medal at Rio 2016 - the first of their three scheduled races starts at 3.05pm
Rio 2016 bronze medalist Sam Meech (Laser) is currently 17th overall after three races. Three races scheduled today, starting 3.15pm
Josh Junior (Finn) - two races starting at 4.05pm
Peter Burling & Blair Tuke (49er) start the defence of the title they won at the Rio Olympics at 5.50pm
Football
After two losses, the Football Ferns go up against Sweden in the women's group G at 8pm.