JOHN Duggan's eyes welled with tears as he watched his grandson Dominic McCahon stride to the plate of the softball diamond that bears his name.

"I was a little bit emotional when I saw him up there for the first time," John admitted on Saturday. "He hit a two base hit and scored two runs. It was awesome."

The proud moment played out for the family members at the Queensland under-15 boys' softball championships at Rockhampton's Kele Park at the weekend.

Dominic, 12, was playing for Redlands and his grandfather was there to cheer him on.

John was president of Rockhampton Softball for 10 years and was the association's first life member.

The diamond at Kele Park was named in his honour in 1999, recognising his service to the sport.

Dominic, who was playing in his first rep team, said it felt pretty special to be playing on "pop's diamond" and his team mates thought it was pretty cool too.

John explained that his involvement in the sport started more than 30 years ago when his daughter came home from school and announced that she would be playing softball on Friday afternoons.

He went from ferrying the children to training and games to become a scorer and then a coach, a role he found incredibly satisfying.

"Being a coach is so much more than just teaching kids skills.

"You are also a mentor and you have the power to shape people's lives," he said.