"That's stout for a 13-year-old," he said.
Baldwyn's Jenkins put together two solid rounds to finish 3-under-par 141 to win his fourth consecutive North Mississippi Coca-Cola Junior Tour age division championship.
Jenkins entered the final round of the 36-hole event with a 10-stroke lead after shooting a career-best 4-under 68 in Monday's opening round.
Despite some struggles with his putter, he shot a 1-over 73 Tuesday to soar to a 17-stroke victory in the age 12-13 division.
The Baldwyn eighth grader's final score was 11 shots better than anybody else in the tournament's three age divisions.
"I missed a ton of birdie opportunities on the back today," said Jenkins, who recorded just one birdie in his final round. "I missed two or three (putts) from inside seven feet at least."
Jenkins didn't miss many birdie attempts in the opening round.
"Yesterday I just tried to hit the fairways and greens, and tried to two-putt," he said. "Some of my putts fell ... six of them."
Jenkins, who played last week in the U.S. Kids Golf 2009 Teen World Championship in Pinehurst, N.C., and finished tied for 38th, said the greens at both facilities were similar.
"The greens' speeds were the same and that helped me here," he said. "You can always go lower, but I'll take a 68 any day."
Jenkins won the same division last summer and captured back-to-back age 10-11 Tour championships the previous two years.
Tupelo's Miles Johnson, 78-80-158, placed second and Belden's Austin Rose, 83-79-162, third in the 12-13 division.
Starkville's Chase Taylor captured the 14-15 division championship with a 78-76-154 score. Ripley's Zach Pritchett, 80-80-160, was second and Scotty Lawrence, 81-87-168, of Vernon, Ala., was third.
Saltillo's Corbin May recorded a 71-81-152 to take the 16-18 championship while his high school teammate, Adam Hall, was second with a 77-77-154. Pontotoc's Clif Hanna was third with a 77-80-157.
Jackson's Wilson Furr won the 10-11 18-hole championship with a score of 44-36-80. Belden's Parker Brooks was second with a 39-42-81.
Molly Hale of New Albany won the girls title with a 91-92-183.