In the midst of Australia's thumping 111-run opening pool win over England in Melbourne, all-rounder Watson was dismissed by paceman Stuart Broad for a golden duck.
While it was generally acknowledged he had received a good delivery, his exit reignited the long-running debate about Watson's worth to Australia, with many observers contending he is not a good enough batsman or bowler to hold down a place in the side.
The 33-year-old's cause was not helped when Australia's second Pool A game against Brisbane last weekend was washed out without a ball bowled and Watson's World Cup could now depend on how he performs against New Zealand at Auckland's Eden Park on Saturday -- if selected.
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"It's crunch time for me to score runs in general," Watson said Wednesday, when asked if he needed a score to keep his place in the side. It was disappointing not to get through that first ball," said Watson of his Melbourne dismissal.
"But it's important for me to score runs anytime. It's up to the selectors in the end, whether they see fit for me to play," he added.
"I have been involved in a number of World Cups and I know what to expect. But I'm doing everything I possibly can. I just want to score runs and I know it doesn't always go exactly to plan as well."