"Losing is never fun, but I'm very proud of making it this far in the tournament," Puetz said. "It was a good run and it will help my confidence for next year. I have a lot to improve on and to work for come the fall. I'm excited for next year because I know now that I can do well and go far."
Puetz, who finished the season 32-11 in singles, came into the event seeded 16th while Childs was the 19th seed.
"It was a great run for Tim," Auburn coach Eric Shore said. "I felt that he had a chance to win the whole thing, but Childs was better today. Tim ran out of gas physically and mentally toward the end. The good thing is that he has another year and he can build on this for his senior season."