Before Serena and Venus Williams, the Bulgarian sisters who shined in tennis and defied the odds

They grew up and trained under precarious conditions in Bulgaria. Despite the lack of support, the Maleeva sisters found success and were considered the best siblings in tennis before Serena and Venus Williams.

• She won 7 Grand Slams, was compared to Federer, overcame illness, and shockingly retired when she was World No. 1
• He faced Djokovic, Federer and Nadal, threatened Diego Maradona and got suspended for life at 35