Should Williams - who is 183rd in the rankings as she returns after the birth of her first child - be seeded, Cibulkova is likely to miss out.

Williams, 36, says players returning from pregnancy should have protected seedings as well as protected rankings.

Cibulkova, 29, said: "I don't think it's the right thing to do."

She added: "I think it's just not fair. I have tried and I should be seeded. If they put her in front of me then I will lose my spot that I am supposed to have.

"I was a former number four, and it's also like why should I not be seeded if I have the right to be?"

The decision on seeding will be announced at 10:00 BST on Wednesday.

American Williams has played only three tournaments in the past 12 months, having given birth to a daughter in September.

The All England Club usually follows the WTA ranking list, but reserves the right to make a change if it "is necessary to produce a balanced draw".

Slovakia's Cibulkova has twice reached the quarter-finals at Wimbledon.