Venus Williams will miss the WTA tournament in Madrid. The American, World No. 21, has withdrawn due to pain in the lower back. She was crossing the racket against Anabel Median Gar on Sunday.

As she came out, the Spaniard will face Switzerland’s Stefanie Voegele for a ticket to the second round.

The younger sister of Venus, Serena Williams, the World No. 1, will make her opening match in the second round against the finalist of the Marrakech tournament, Loudres Dominguez.

The Spanish dominated for her first-round match Simona Help, 6/2, 4/6, 6/84.