<p>Romanian media said Halep's deal with Nike is worth $2 million a year. (AP) <p>BUCHAREST, Romania (AP) — Australian Open finalist Simona Halep has signed a deal with Nike after playing without a sponsor in Melbourne.<p>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."<p>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.<p>Halep was also without a clothing sponsor when she won the Shenzhen Open earlier in January.<p>Romanian media said Halep's deal with Nike is worth $2 million a year.<p>Halep previously had a contract with Adidas.<p>She lost the Australian Open final to Denmark's Caroline Wozniacki.<p>Both Halep and Wozniacki will play in the Doha Open this week.