The sophomore not only finished in first place, but he also broke the meet record, previously held by Sikeston's Dale Ham.
Lincoln ran the 5,000 meter course in 16:34.5, shattering the old mark of 17:03.
"Clay showed today why he was an all-stater last year in track," said Sikeston head coach Gary Williams.
"This was the first week that Clay relaxed and let the race come to him rather than trying to muscle through the race. He had the best finishing kick of any race he has run this year."
For the first time this year, Williams fielded a varsity team, moving several younger runners up to the older division.
"Because few runners, until this year, have come out for cross-country we are basically using our JV team in the varsity," said Williams.
"So I cost a few of them medals this week by placing them in the varsity thinking that the experience they gain this year will pay off down the road."
Williams said Trevor Alhfield, who is in his first year of cross country, would have finished fifth out of 60 runners in the JV race.
But instead he ran on the varsity level where he placed a respectable 28th in a time of 19:18, a personal record. Others finishing in the varsity were Quinton Lamb (44th), freshman Jordan Roberts (45th), Kevin Fredrecksen (47th) and Steven Henson (48th).
On the girls side, sophomore Traci Jackson won the 18th place medal on the JV level.
"We finished a somewhat disappointing 7th out of eight teams but the experience they gained here was valuable," said Williams.
"With a strong 7th and 8th grade group coming up, we could see the development of a much stronger team by next year."
Sikeston will next compete in the Marshall County Invitational in Kentucky next Saturday.