| Challenger Francavilla | 05/07 18:00 | 25 | Quinn, Ethan v Gabriele Piraino | 5-7,5-7 | |
| Challenger Savannah | 04/24 19:25 | 26 | [234] 포프코, 드미트리 v Quinn, Ethan [248] | 6-4,5-7,6-3 | |
| Challenger Savannah | 04/22 20:50 | 25 | [248] Quinn, Ethan v 크루포드, 올리버 [197] | 6-2,6-4 | |
| Challenger Tallahassee | 04/16 17:05 | 25 | [277] 크루에겔, 미트첼 v Quinn, Ethan [243] | 6-1,7-6 | |
| Challenger Sarasota | 04/10 15:00 | 26 | Quinn, Ethan v 코즐로브, 스테판 | 2-6,7-5,4-6 | |
| Challenger Sarasota | 04/08 18:40 | 25 | [202] 타부르, 클레멘트 v Quinn, Ethan [254] | 4-6,6-7 | |
| Houston, USA | 03/30 18:30 | 14 | [146] 바체로트, 발렌틴 v Quinn, Ethan [253] | 3-6,6-3,6-4 | |
| ITF M25 Calabasas | 03/21 18:00 | 26 | Kang, Kyle v Quinn, Ethan | 7-5,6-3 | |
| ITF M25 Calabasas | 03/19 21:45 | 25 | Dominique Rolland v Quinn, Ethan | 6-3,3-6,2-6 | |
| ITF M25 Bakersfield | 03/13 18:25 | 25 | Quinn, Ethan v 레그아웃, 티모 | 4-6,7-5,0-6 | |
| Indian Wells, USA | 03/08 01:50 | 23 | [284] Quinn, Ethan v Kypson, Patrick [151] | 1-6,6-7 | |
| Indian Wells, USA | 03/05 18:00 | 15 | [284] Quinn, Ethan v 바바소리, 안드레아 [133] | 4-6,6-1,6-2 | |
| Indian Wells, USA | 03/04 18:00 | 14 | [104] 할리스, 퀸틴 v Quinn, Ethan [284] | 1-6,5-7 | |
| ATP Delray Beach | 02/10 21:40 | 14 | [288] Quinn, Ethan v 스바지다, 자차리 [145] | 3-6,3-6 | |
| ATP Dallas | 02/07 20:05 | 25 | [288] Quinn, Ethan v 히지카타, 린키 [88] | 4-6,4-6 | |
| Challenger Cleveland | 02/04 18:00 | 29 | [185] Kypson, Patrick v Quinn, Ethan [337] | 4-6,6-3,6-2 | |
| Challenger Cleveland | 02/03 19:00 | 28 | [182] 쿠들라, 다니스 v Quinn, Ethan [337] | 3-6,4-6 | |
| Challenger Cleveland | 02/02 18:10 | 27 | [337] Quinn, Ethan v 키아트코우스키, 다이손 [296] | 7-6,5-7,6-4 | |
| Challenger Cleveland | 02/01 16:00 | 26 | Quinn, Ethan v 코즐로브, 스테판 | 6-2,4-6,6-3 | |
| Challenger Cleveland | 01/29 20:15 | 25 | [299] 마요, 아이단 v Quinn, Ethan [337] | 3-6,3-6 | |
| ITF M25 Wesley Chapel | 01/24 13:55 | 25 | 벨트란, 페터 v Quinn, Ethan | 7-6,7-5 | |
| Challenger Oeiras | 01/10 13:00 | 26 | [304] 엘리아스, 가스타오 v Quinn, Ethan [343] | 3-6,7-5,6-4 | |
| Challenger Oeiras | 01/08 13:00 | 25 | Quinn, Ethan v 도밍게스, 조아오 | 7-5,6-3 | |
| Challenger Oeiras | 01/02 14:40 | 25 | 우르수, 바딤 v Quinn, Ethan | 6-4,7-5 | |
| Challenger Oeiras | 01/02 13:40 | 25 | 뉴크리스트, 맥시밀리안 v Quinn, Ethan | Cancelled | |
| Challenger Champaign | 11/18 21:45 | 28 | [239] Kypson, Patrick v Quinn, Ethan [374] | 6-4,6-2 | |
| Challenger Champaign | 11/17 18:55 | 27 | [374] Quinn, Ethan v 셀다루식, 니노 [305] | 6-3,6-3 | |
| Challenger Champaign | 11/15 17:00 | 26 | [374] Quinn, Ethan v 키르치헤머, 스트롱 [401] | 6-1,6-4 | |
| Challenger Champaign | 11/14 16:00 | 25 | [146] 나바, 에밀리오 v Quinn, Ethan [374] | 3-6,2-6 | |
| Challenger Knoxville | 11/07 15:00 | 25 | [267] 산드그렌, 테니스 v Quinn, Ethan [374] | 4-6,7-6,7-6 |