Auckland Grammar School has a keen Baseball team that is involved in national and regional competitions. There is a senior and a junior team, allowing for all boys of different ages and abilities to find a place within the sport.
In 2013 the team came in at second place in the National Secondary School Baseball Tournament. Two of Auckland Grammar's players were named in the All-Tournament Team, consisting of the top players from various teams in the competition.
In 2014 at the National tournament, the Auckland Grammar School team placed in the top eight and were Auckland runners-up.
The Master in Charge of Baseball is Mr Moore. Students are able to speak to him in the Classical Studies department during the School day or contact him via email.