Lamont Peterson has been cleared of taking performance enhancing
drugs by the IBF.
The American light-welterweight failed two drug tests in the run
up to his ill-fated rematch with Britain's Amir Khan and has
already been stripped of his WBA crown.
However, the IBF have ruled that his use of a synthetic
testosterone was "not for the purpose of performance enhancement"
and allowed him to keep possession of their title.
A statement read: "After concluding the review of all the
documentation provided by Peterson's camp and the Nevada State
Athletic Commission, the physician determined that the testosterone
levels noted in the Voluntary Anti-Doping Association (Vada) report
are consistent with the therapeutic use of the hormone and not for
the purpose of performance enhancement.
"Therefore, these levels would not have enhanced Lamont
Peterson's training for, or performance during, the bout on 10
December 2011. Nor for his training for the bout that was schedule
for 19 May 2012, as a specimen collected by Vada on 13 April 2012
tested negative on 2 May 2012."
The IBF have now said that Peterson must make a mandatory
defence against former holder Zab Judah.