Straight out of the gates, Day One is packed full of events and not surprisingly most TV channels in Japan are broadcasting the action, ranging from fencing and archery to badminton and cycling. Already before noon, the first gold medal of the Games was logged: Congratulations to China's Yang Qian!
You can check out the day's full schedule or see our tips on what to watch today.
If you need a recap of last night's opening ceremony, we've got that in words and in pictures.
And if you're not really sure who is scoring and what it takes to win, we've got you covered there too.