One has been banned for life, and four others were given suspensions varying from two to 10 years. The highest ranking any of the players ever achieved was No. 399.

Juan Gabriel Castro, a national-level chair umpire, was accused of having "manipulated scoring entry to contrive the scorecard and facilitate corruption."

Brazil's Nicolas Zanellato tested positive for boldenone while competing at an ATP Challenger event in Ibague, Colombia, in June 2024.

The reveal only came to light ahead of last year’s US Open, but it was weighing on the Italian's mind for much longer.

Despite the hoo-ha over the "convenient" resolution of his case, this outcome is a fair one under the current rules and protocols governing anti-doping.

The 24-time major winner called on WADA and the ITIA to overhaul their processes for dealing with doping cases "because the system and the structure obviously doesn't work."

The world No. 1 will be eligible to return to action on May 4, in time for his home tournament in Rome.

Oliveira was tested while competing at an ATP Challenger event in Mexico, and the A sample was positive for the banned substance.

Dragos Madaras had been suspended under the tennis anti-corruption program for breaching rules after refusing to cooperate and have his mobile phone analysed as part of an investigation.

The decision came just after the five-time major winner breezed into the Australian Open quarterfinals Monday.

The world's top-ranked tennis player will go to sport’s highest court in April as WADA appeal seeks to ban him from the sport for at least one year.