Schniederjans shot a final-round 67, which included a hole-in-one, to finish at 13-under par and in a tie for fifth place in the Web.com Tour’s Air Capital Classic in Wichita, Kan.
“I played some really good golf,” Schniederjans said. “It was a good week.”
The former Harrison High School and current Georgia Tech star, who ascended to the top spot in the World Amateur Golf Rankings last week, shot rounds of 64-71-66 the first three days and would have earned a check of more than $22,000 had he been a professional.
Sebastian Cappelen won the event for his first Web.com Tour title, finishing with a 4-under 66 for a one-stroke victory over Matt Weibring.
Cappelen, from Denmark, shot 18-under 262 and earned $108,000.
Weibring shot a 64. Cameron Percy and Jeff Gove tied for third at 14-under.
Schniederjans qualified for the tournament by winning the United States Collegiate Championship and was the only amateur in the field. He started Sunday’s round at 10-under and only four shots out of the lead. Schniederjans immediately birdied No. 1, but then missed good birdie chances on Nos. 3, 4 and 5.
“I left four shots out there the first seven holes,” he said.
Then, back-to-back bogeys on No. 6 and No. 7 dropped Schniederjans back to 9-under par.
“I knew I had to calm down and be patient,” he said. “I knew I couldn’t press the situation or I’d make more bogeys.”
His patience was rewarded on the par 3 eighth.
“It was 197 yards into the wind and I hit a cut 6-iron,” Schniederjans said. “And I hit it perfect. It was one of those where I really didn’t know what to say. The ball landed about 5-feet short and barely trickled in the hole. It really was a perfect shot.”
The ace was his seventh and third in competition.
“But this was the biggest one in competition,” he said. “It was awesome.”
Schniederjans doesn’t have much time to rest. He is scheduled to fly home today, repack his bags and fly to England later tonight. He will represent the United States later this week in the Palmer Cup, a Ryder Cup format event against the best collegiate players from Great Britain and Ireland.
The Associated Press contributed to this report.