Gelderloos cut time on all seven of his swims at the Knight Invite Nov. 29-Dec. 1, aiding Calvin in a third-place finish. In the 800 Free Relay, Gelderloos had a split of 1:43.3 on the second leg to trim seven seconds from his previous best time. In the 200 Fly, Gelderloos touched in 1:57.39 in the prelims for the fourth-best time in the MIAA this season. Gelderloos also posted a time of 4:19.54 for a personal best and a 20-second improvement from earlier in the year. His individual swims in the 100 Fly, 200 Fly, and 400 IM are in the top 10 in the MIAA.