Tiger Woods withdrew from the Omega Dubai Desert Classic without hitting a shot in his second round. He was making his first European Tour appearance since the 2015 US PGA Championship after a long spell out due to back problems, and sometimes appeared to be in discomfort while shooting an opening 77 that left him 12 strokes behind overnight leader Sergio García and in danger of missing the cut for a second week in a row.

"He felt okay coming off the golf course yesterday so he wasn't in pain," said Woods' agent Mark Steinberg. "I didn't see him at dinner but he said he was okay and went into a spasm in his lower back, fairly late last night after dinner. He tried to work it out last night, didn't really get it worked out. He had treatment starting pretty early this morning for probably the past three, three and a half hours.

"He says it's not the nerve pain that's kept him out for so long. He says it's a back spasm and he just can't get the spasm to calm down. So that's where we are. He feels terrible, talked to (playing partners) Matthew (Fitzpatrick) and Danny (Willett); he feels awful and he feels terrible for the tournament. He wanted to be here. He wants to be here. He just feels terrible that he can't, you know, finish it out today.

"He can move around; he can't make a full rotation on the swing. The fact that he feels as though it's not the nerve pain, that's very encouraging for him. The short-term prognosis, he hopes he'll be strong based on the fact that it's not that nerve pain."