The event is being hosted in New Zealand for the first time this year and matches are being played at Galloway Park, Jansen Park and Seddon Park.
The tournament has been held seven times in different locations around the world but this is just the second time New Zealand has entered a team.
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Australia, Sri Lanka, India, Pakistan and Bangladesh all have two teams in the mix this year.
England, New Zealand and the West Indies each have one team playing, as well as a Commonwealth team.
Sandford said there were some "excellent players involved".
The Kiwis have played Australia, Bangladesh, India and Pakistan and Sri Lanka so far.
They will face the West Indies on Wednesday "which is one game we'll be hoping to win", Sandford said.
"Most of the teams in Group A are very serious and it's a big deal to be playing in the tournament for your country. The New Zealand team is a little more laid back and just enjoying taking part."
The players, well-trained in arguing their points, haven't kept quiet on the pitch.
"There has been a lot of debate about rules in the past, which has continued here," Sandford said.
Braithwaite said it was "a very collegial competition" with "cricket for friendship".
"It's a great way for people in the law industry, who also love the game of cricket, to make contacts and friends from around the world."
He said New Zealand was in the top division but "wasn't expecting too much in the way of results".
"India, for example, has a lawyers' qualifying tournament with 19 teams and selection follows that tournament. So they pretty sharp and particularly classy batsmen. We don't have anything near that type of player base."
Some lawyers had been in Australia for the Boxing Day Test.
An opening ceremony was held on December 29, followed by a welcome function at the University of Waikato.
Two other functions have been held since and a cocktail night will follow a sports law conference being held today, a rest day.
Semifinals and plate matches will be played tomorrow before the finals at Seddon Park on Thursday.