Boris Johnson is inspecting the new spectator stand and changing rooms at Streatham-Croydon Rugby Club, which have been built following a grant from his sports legacy fund.
The fund helps local clubs across the capital build new or refurbish existing sports facilities. The Mayor is meeting local youngsters who are benefiting from the new facilities.
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The London mayor publicly backed defeated candidate Owen Smith in the contest which saw Mr Corbyn re-elected party leader.
Police described it as a "growing sink hole" and it's unclear when the road will reopen.
The victim, in her 30s, was sitting in a garden in the early hours of the morning when a man leapt over the fence.