Kaemmerlen enjoyed a tremendous weekend at the 2009 Don Richards Memorial Tournament, winning the 100-yard freestyle in 47.67 seconds, 100-yard breaststroke in 59.13 seconds, while swimming the lead position on the 200-freestyle relay, teamming up Kevin Christiansen, Ryan Brannan, and Ryan Marchant to win with a time of 1:27.68. Kaemmerlen's lead time was 21.16 seconds. His time of 59.13 in the breaststroke broke a 16-year old school record. On Sunday, he won the 50-yard freestyle with a time of 21.24. He was the anchor leg on the 200-yard medley relay team that finished second with a time of 1:39.09. Kaemmerlen swam the anchor leg in a speedy 21.01 seconds. He was also part of the 400-yard freestyle that finished second with a time of 3:16.15.
