Baked orange and rosemary chicken thighs

Ingredients

• 4 chicken thighs, skinless and boneless
• 2 tablespoon olive oil
• 1/2 cup fresh orange juice
• 1/4 cup red wine vinegar
• 1 teaspoon brown sugar
• 1 clove garlic, crushed
• 1 tablespoon rosemary, finely chopped
• 1/2 teaspoon salt
• freshly ground black pepper