Volleyball
Poland men's team will win a medal.
A team from the Asian Volleyball Confederation will win a medal (men's or women's). (Note: phrased like this so people don't ask about Turkey)
Handball
France will defend both titles.
Hockey
The top scorer of the women's competition will be a dutch player.
Great Britain will win a medal (men's or women's).
Football
Spain will win the women's or men's gold medal (or both).
At least one overaged player (born 2000 or before) will receive a red card in the men's tournament.
Water Polo
The USA women's team will lose a match.
Rugby Sevens
The women's final will feature Australia and New Zealand.
At least one medal match will be decided in extra-time.
Tennis
At least one player (man or woman) that has never advanced further than the round of 16 at the French Open singles tournament will win a singles medal in Paris 2024.
General
At least six south american nations will medal.
At least two NOCs will win their first olympic medal.
Mexico will finish higher than Colombia in the medal table.
At least two of these NOCs (which haven't won a medal since Sydney 2000 or before) will medal again in Paris 2024: Barbados, Costa Rica, Guyana, Haiti, Iraq, Lebanon, Luxembourg, Mozambique, Pakistan, Peru, Sri Lanka, Suriname, Tanzania, Tonga, Uruguay, US Virgin Islands, Zambia.