| Qatar Open 2019, MS | 03/21 19:00 | - | 아사르, 오마르 v 가시나, 안드레이 | L | 1-3 | |
| Czech Republic Extraleague | 02/16 14:20 | - | 아사르, 오마르 v 우다, 유키YA | L | 2-4 | |
| Czech Republic Extraleague | 02/15 19:00 | - | 아사르, 오마르 v 쉬, 하이 | W | 4-2 | |
| Qatar Open 2019, MS | 12/07 19:24 | - | 아사르, 오마르 v 바움, 파트릭 | W | 3-2 | |
| Qatar Open 2019, MS | 11/14 18:03 | - | Simon Belik v 아사르, 오마르 | L | 3-1 | |
| Qatar Open 2019, MS | 10/10 19:04 | - | 플로르, 트리스탄 v 아사르, 오마르 | L | 3-2 | |
| Qatar Open 2019, MS | 09/27 17:01 | - | 아사르, 오마르 v 카르발류, 디오고 | W | 3-1 | |
| Czech Republic Extraleague | 05/31 08:40 | 5 | 르베송, 에마뉘엘 v 아사르, 오마르 | L | 4-1 | |
| Czech Republic Extraleague | 05/25 08:10 | 4 | 아사르, 오마르 v 요시무라, 마하루 | L | 0-4 | |
| Czech Republic Extraleague | 05/24 07:30 | 5 | 아사르, 오마르 v 가오, 닝 | W | 4-1 | |
| Qatar Open 2019, MS | 05/03 18:30 | 1 | 스카치코프, 키릴 v 아사르, 오마르 | L | 3-1 | |
| Qatar Open 2019, MS | 05/03 17:30 | 1 | 가디에프, 빌단 v 아사르, 오마르 | W | 0-3 | |
| Qatar Open 2019, MS | 04/29 12:30 | 1 | 볼, 티모 v 아사르, 오마르 | W | 2-3 | |
| Qatar Open 2019, MS | 04/29 11:20 | 1 | 필루스, 루웬 v 아사르, 오마르 | W | 1-3 | |
| German Open 2020, WD | 03/23 19:20 | 5 | 호, 콴 키트 v 아사르, 오마르 | L | 4-1 | |
| Qatar Open XD | 03/08 14:20 | 5 | 저우, 위 v 아사르, 오마르 | L | 4-1 | |
| Qatar Open XD | 02/22 12:30 | 1 | 하리모토, 토모카즈 v 아사르, 오마르 | L | 3-2 | |
| Qatar Open XD | 01/18 14:30 | 5 | 아사르, 오마르 v 쉬, 첸하우 | L | 0-4 | |
| Qatar Open 2019, MS | 01/06 11:20 | - | 칼슨, 크리스티안 v 아사르, 오마르 | L | 3-2 | |
| Qatar Open 2019, MS | 10/21 10:00 | 4 | 마, 룽 v 아사르, 오마르 | L | 4-1 | |
| Qatar Open XD | 10/20 16:15 | 1 | 아사르, 오마르 v 시바에프, 알렉산더 | L | 3-4 | |
| Qatar Open XD | 10/20 13:45 | 1 | 아사르, 오마르 v 누이팅크, 세드릭 | W | 4-3 | |
| Qatar Open XD | 09/23 10:15 | 3 | 아사르, 오마르 v 얀, 안 | L | 1-4 | |
| Qatar Open XD | 09/22 15:00 | 4 | 아사르, 오마르 v 칼슨, 크리스티안 | W | 4-2 | |
| Qatar Open XD | 09/21 13:00 | 5 | 왕, 춘 팅 v 아사르, 오마르 | W | 1-4 | |
| Qatar Open XD | 08/24 13:10 | 5 | 볼, 티모 v 아사르, 오마르 | L | 4-0 | |
| Qatar Open XD | 08/22 14:40 | 1 | 아사르, 오마르 v 라네풀, 엘리아스 | W | 4-3 | |
| Qatar Open XD | 08/13 15:00 | 1 | Gandhi, Sarthak v 아사르, 오마르 | W | 0-4 | |
| Qatar Open XD | 08/13 11:15 | 1 | 스지타, 마턴 v 아사르, 오마르 | W | 1-4 | |
| Qatar Open XD | 08/12 18:05 | 1 | 룸게이, 가빈 v 아사르, 오마르 | W | 2-4 |
Omar Muhammadi Muhammad Muhammad Assar (born 22 July 1991 in Desouk) is an Egyptian table tennis player. He won silver in singles and gold in team play at the 2011 Arab Games in Doha. He also competed at the 2012 and 2016 Summer Olympics in the Men's singles, but was defeated in the second round on both occasions.
2012 Olympics
At the 2012 Summer Olympics Assar competed in the men's singles, where he lost in the second round to Panagiotis Gionis, and the men's team event, where Egypt lost in the first round to Austria.
2016 Olympics
At the 2016 Summer Olympics Assar competed in the men's singles only. He lost in the second round again, this time narrowly losing 3–4 to Lei Kou of Ukraine.
ITTF World Championships 2017
Men's singles
Assar competed in the 2017 World Table Tennis Championships, seeded as number 50, facing off against Italian player Marco Rech in the first round, whom he defeated in a close match (4-3), having lost the first 3 sets. In the second round, he was defeated by Hong Kong player, and number 7 seed Wong Chun Ting (2-4).
Men's doubles
Assar teamed with fellow Egyptian player Mohamed El-Beiali for the doubles event, in which they were unseeded and faced the number 5 seed Brazilian of Hugo Calderano and Gustavo Tsuboi, losing the match (2-4).
"Mixed Doubles"
Assar teamed with fellow Egyptian player Dina Meshref for the mixed doubles event, seeded as number 12 team. They advanced to the third round of the tournament, before being eliminated by the Spanish team of Álvaro Robles and Galia Dvorak (1-4).
All-African Games
Assar won both the 2015 and 2016 All-African Games, Men's Singles. In 2017, his three-peat was interrupted by Nigerian table tennis player, Quadri Aruna, who defeated Assar in the tournament final (3-4).
2018 ITTF African-Cup
Assar defeated Tunisian table tennis player Thameur Mamia (4-1) in the quarterfinals of the event. He then defeated Saheed Idowu in the semifinal (4-0). Finally, Assar defeated long-time rival Quadri Aruna in the final of the event in order to win his third African-Cup.
2020 Olympics
At the 2020 Summer Olympics, Assar finished 5th in the men's singles event after losing to China's Ma Long in the quarterfinals. He also competed in the men's team event and the mixed doubles.
As of August 2021, Omar is ranked 36th in the world in the ITTF world rankings. He reached his highest ranking of 16th in March 2016.