Question marks still hover tonight over whether New Zealand will have one, or both, or neither of their best batsmen for the pivotal third ODI against England in Wellington on Saturday.
Both are nursing injuries. In Williamson's case a hamstring strain sidelined him from the second match of the five-game rubber in Mt Maunganui on Wednesday night's six-wicket loss.
Taylor damaged a quad muscle diving to regain his crease during the match. He didn't make it, run out by smart work from fielder David Willey, and wasn't sighted in the field during England's win.
In Taylor's case, a precautionary scan showed no serious damage. However he will be required to undergo more assessment at the New Zealand training session in Wellington tomorrow. It is not clear whether he will be ready to return to action on Saturday.
Williamson faces more assessment tomorrow and, as with Taylor, his availability for Saturday is yet to be determined.