Jimmy Feigen.
The swimmer's lawyer just announced that JF struck a deal with Brazilian officials ... in which he agreed to pony up a check for $10,800 to a Brazilian charity called the Reaction Institute.
In exchange, prosecutors say they will not charge Feigen with filing a false police report for lying about being robbed at gunpoint during a gas station bathroom incident early Sunday morning.
FYI, the Reaction Institute is a community outreach program that helps Brazil's youth with judo training. Ronda Rousey has worked with the charity in the past.
Rio .