Rafael Nadal has pulled out of the BNP Paribas Open a day before he was supposed to play his first official match in two months. The 22-time Grand Slam champion posted the news on social media Wednesday night, writing that he was announcing the withdrawal “with great sadness.” The 37-year-old from Spain missed nearly all of last season because of a hip injury that required surgery, then briefly returned to action for three matches in early January before tearing a muscle near the hip. That forced him to bypass the Australian Open — and he has not been on tour since. He was scheduled to face Milos Raonic on Thursday.