Williamson wentout of his way to check in on Afghanistan's Rashid Khan after he was struck by a Lockie Ferguson short ball in the first innings.
The ball hit Rashid on the grill of his helmet, before bouncing onto the stumps, and the star spinner was clearly feeling the effects as he walked off.
Williamson - his captain and longtime teammate in the Indian Premier League at Sunrisers Hyderabad - came across to put his arm around Rashid to make sure he was alright, while other Black Caps including Ferguson also checked in on his status.
Kane Williamson of New Zealand checks Rashid Khan of Afghanistan after he was struck on the head and dismissed. Photo / Getty
Williamson was praised for his kind actions.
I swear I have not see nicer people than the Kiwis. In a second, Williamson ran over to check out Rashid Khan and no celebration occurred for the wicket. Unfortunately I it looks like he got a concussion. #CWC19
While both players would surely insist that their opposition would do the same for them, the Black Caps are seen as "the nice guys" of world cricket, and after today, it's easy to see why.
The Alternative Commentary Collective are podcasting their way through the World Cup. Known for their unconventional sports analysis and off-kilter banter, the ACC have come to ask the tough questions. Here's the latest episode of 'The Agenda':
