Swiatek said she couldn't play over the fall owing to 'personal matters'. That didn't really explain what was going on

Simona Halep questioned the "big difference" in how doping cases are treated after world number two Iga Swiatek was handed a one-month drugs ban while the Romanian was out of action for over 18 months following two separate anti-doping violations.

Iga Swiatek is the second high-profile tennis player to test positive for a banned substance this year, joining Jannik Sinner. While Sinner, currently the No. 1 ranked man, was fully cleared, Swiatek, who slid from No. 1 to No. 2 last month, accepted a one-month suspension that was announced Thursday.

The five-time Grand Slam champion has served 22 days of a one-month ban from tennis. Here's what you need to know

How Iga Swiatek explained away doping case and contaminated melatonin product - The World No 2 has already served for the majority of her one-month suspension

Iga Swiatek, who accepted a one-month suspension announced on November 28, is the second high-profile tennis player to test positive for a banned subs