BUCHAREST, Romania - Australian Open finalist Simona Halep has signed a deal with Nike after playing without a sponsor in Melbourne.

The second-ranked Romanian made the announcement Monday on her Facebook account. She posted a photo with the caption, ''Just Do It. I just did it.''

Halep wore a red unbranded dress in last month's final, leading to some jokes on social media. She said she bought the dress online.

Halep was also without a clothing sponsor when she won the Shenzhen Open earlier in January.

Romanian media said Halep's deal with Nike is worth $2 million a year.

Halep previously had a contract with Adidas.

She lost the Australian Open final to Denmark's Caroline Wozniacki.

Both Halep and Wozniacki will play in the Doha Open this week.