Watson, 31, has jumped straight from club cricket on Saturday into hurly burly of a one-day interstate match on Wednesday.
The national team vice-captain is completing another highly scrutinised comeback, this time from an on-going nagging calf injury.
Watson had his first playing outing in a month when he made 30 in a Sydney club match and was then picked to play for New South Wales in a Ryobi Cup game against Western Australia at the SCG on Wednesday.
It is the same day national selectors are tipped to announce a touring part to head to India for four Tests starting late next month.
Watson will confront a strong West Aussie contingent that includes recently retired Test teammate Mike Hussey as well as Australian Twenty20 batsmen Shaun Marsh and Adam Voges.
Watson continues to make claims he wants to be fully fit to play in the India Test series as part of his and Australia's crucial lead-up to the much anticipated Ashes series against England starting in July.
He could be overlooked for the India tour and rebuild strength and fitness, as well as a secure batting position, at first-class level with NSW in Sheffield Shield four-day outings to press genuine claims for a gruelling Ashes series.