LONDON -- The ITF says Brazilian tennis player Fernando Romboli has completed an 8½-month suspension for a doping violation.

The International Tennis Federation says Romboli tested positive for two banned diuretics, furosemide and hydrochlorothiazide, at a lower-tier ATP challenger event in Bogota, Colombia, on July 11, 2012.

The ITF says the 24-year-old player argued the substances came from a contaminated supplement that had been prescribed by a doctor and denied any intent to enhance his performance.

The ITF says it accepted Romboli's defense and gave him a reduced penalty because there was no "significant fault or negligence."

The 8½-month suspension was backdated to Sept. 1, 2012, and expired on Wednesday.