I agree with most of what you're saying but Sergio let the pressure et to him. That is choking in my book.
Wuote from the BBC:
Garcia admitted that his stuttering front nine cost him dearly.
"I was definitely a little bit nervous at the beginning and it's understandable," he said.
"If you're trying to win an Open championship and you're leading and you're not nervous, then you must be dead. I definitely struggled on the front nine."