ITF Turkey F1 01/15 08:00 29 Sieber, Marc v 퀸지, 지안루이지 6-3,3-6,3-6
ITF Turkey F1 01/14 13:00 28 스토리, 리안 제임스 v Sieber, Marc 3-6,3-6
ITF Turkey F1 01/13 12:00 27 Sieber, Marc v 그레이, 조나단 6-2,6-4
ITF Turkey F1 01/12 12:55 26 Sieber, Marc v Eon, Julien 6-1,6-0
ITF Turkey F1 01/09 09:15 25 Sieber, Marc v Alekseenko, Vadim 6-2,6-0
ITF Turkey F1 01/08 07:30 44 Sieber, Marc v 보자노비치, 달코 6-1,6-0
ITF Turkey F1 01/07 07:30 44 Sieber, Marc v 오노, 마사요시 6-2,6-2
Challenger Bratislava Qual 11/05 09:00 46 칼레니첸코, 다닐로 v Sieber, Marc 7-6,6-3
Challenger Bratislava Qual 11/04 09:00 45 [416] 셀리크빌레크, 알투그 v Sieber, Marc [360] 7-5,1-6,0-6
Eckental, Germany, Qualifying 10/30 11:20 54 [447] 케른, 로빈 v Sieber, Marc [360] 6-4,6-2
Eckental, Germany, Qualifying 10/29 16:10 46 [325] 차치치, 니콜라 v Sieber, Marc [358] 2-6,6-3,1-6
Eckental, Germany, Qualifying 10/28 17:10 45 Kapas, Andriej v Sieber, Marc 6-4,4-6,3-6
Brest, France, Qualifying 10/22 14:45 46 [210] 아르나볼디, 안드레아 v Sieber, Marc [362] 1-6,6-3,6-3
Brest, France, Qualifying 10/21 10:55 45 베가 헤르난데스, 데이비드 v Sieber, Marc 2-6,4-6
Challenger Ismaning Qual 10/14 13:30 45 Sieber, Marc v 코프리바, 비트 Walkover
Challenger Ortisei 10/13 13:40 27 헤르벨트, 피에레-후구에스 v Sieber, Marc 7-6,3-6,6-3
Challenger Ortisei 10/12 14:00 26 [394] Sieber, Marc v 브라운, 더스틴 [124] 2-6,7-6,7-6
Challenger Ortisei 10/10 10:30 25 시지슬링, 이고르 v Sieber, Marc 1-6,4-6
Ortisei, Italy, Qualifying 10/09 08:00 54 [298] 레셈, 에단 v Sieber, Marc [396] 3-6,4-6
Ortisei, Italy, Qualifying 10/08 08:00 46 Zgombic, Fran Zvonimir v Sieber, Marc 7-5,0-6,4-6
Ortisei, Italy, Qualifying 10/07 08:00 45 [419] 코넥크니, 미칼 v Sieber, Marc [396] 3-6,6-7
Izmir, Turkey 09/19 07:00 25 [406] Sieber, Marc v 미에들러, 루카스 [335] 6-3,4-6,2-6
Challenger Izmir Qual 09/17 10:40 46 Sieber, Marc v Suluoglu, Sefa 6-0,6-3
Challenger Izmir Qual 09/16 09:20 45 Sieber, Marc v 키르시, 코라이 6-4,6-2
Istanbul, Turkey 09/12 08:55 25 [75] 자지리, 말레크 v Sieber, Marc [381] 6-2,7-6
Challenger Istanbul Qual 09/10 10:35 54 Sieber, Marc v 우르수, 바딤 6-3,6-0
Challenger Istanbul Qual 09/09 11:20 46 Sieber, Marc v Griekspoor, Kevin 6-2,6-3
ITF Turkey F32 09/02 12:30 28 Sieber, Marc v Marti, Javier Walkover
ITF Turkey F32 09/01 11:00 27 레이트, 윌슨 v Sieber, Marc 3-6,2-6
ITF Turkey F32 08/31 12:00 26 멜리게니 로드리구에스 알베스, 펠리프 v Sieber, Marc 3-6,5-7