The University of Iowa recruit is an all-American and state champion in that event, having taken the first gold medal in the history of the Owls' program last fall.
After finishing 15th in a field of 69 swimmers during the preliminaries with a time of 1:08.34, Nichols clocked a 1:08.35 to wind up 14th in the finals.
Nichols was entered in four other races for the Heart of America Swim Club, with the top performance among those being 23rd out of 77 entries in the 200 freestyle (1:59.28). He swam against the same number of contestants in the 200 breast (2:53.99), placing 25th.
In his other events, Nichols tied for 31st out of 83 swimmers in the 100 free (54.75 seconds) and came in 34th in the 85-entry 50 free (25.22).
Other members of the Marshall-based HASC competed over the weekend in the Missouri Valley Division II East Championships at Lawrence, Kan., but results from that meet are not yet available.