Leaderboard for Retrieval only metrics.

In the readme.md, It's mentioned that there's a leaderboard for retrieval only scores. But I'm unable to find the retriever only leaderboard (Here: https://github.com/texttron/BrowseComp-Plus#submitting-retrieval-only-results-to-the-leaderboard).
Can you help me find the retrieval only scores leaderboard ?

Thank you,