The Standard weeklies are a set of community races organized by the race mods (HollowLogic, Lefty, Natheirean, Oakishi, and Schulzer) and main tournament organizers (Fenhl, Hyper, Jimbo, Sponge, Tjongejonge_, TobiasG, jaxstronomy, ksinjah, and melqwii) in cooperation with ZeldaSpeedRuns. The races are open to all participants and use the Standard ruleset.
The weeklies are on hiatus until the end of Standard Tournament Season 9's qualifier phase — you can join the qualifiers instead, even if you don't intend to participate in later phases of the tournament.