Since his debut during the Dick Hunt Competition in the 1993-94 season, Glynn has become a regular member of the Union Senior team playing more than 90% of the senior games in the 15 years since. It is due to this regularity that during the 2000-01 season he became the fastest player to play 100 Senior games, and at some stage during this season that he will become only the third player to reach 200 Senior games for the club.

Playing for the 2nds at WBHS as a spinner he was changed to an opening batsman upon promotion to the 1sts and it is this role that he has provided to Union in the majority of his Senior career, although this season has seen him move lower down the order. An aggressive batsman who always looks to score runs at a quick rate, Glynn is currently ranked 5th in the highest run scorers in the club scoring over 3500 runs including one century. His main highlight in his batting would be his senior hundred scoring 100 not out, batting for all 50 overs in a one day match against a team including 23 overs of bowling from Black Cap David Sewell who just a few months earlier played his first and only test match.
Recent seasons has seen Glynn used at the bowling crease more with his leg-spin giving way to medium pace. It was as a spinner that he took 7 wickets in an innings against Central Otago for North Otago during the 2000-01 season.

As his career has progressed it has seen him take a more senior role within the side and providing advice in tactics and coaching some of the junior members of the club. A successful captain, he taken the side to wins in the Dick Hunt Competition, and is level one certified New Zealand Cricket coach.(Oct 2008)