Aruna entered the Men's Singles event at the 2016 Summer Olympics as seed number 27. In the first round, he played and defeated Slovakian player Wang Yang. In the second round, Aruna played number 5 seed Chuang Chih-yuan. Chuang grew repeatedly frustrated as the match went on, uncharacteristically missing his signature forehand attacks and was at a loss against Aruna's unorthodox style. Aruna defeated Chaung in arguably the biggest upset of the tournament without losing a single set. In the third round, Aruna faced world renowned German player, Timo Boll. Remarkably, Aruna defeated Boll, earning him a spot in the Quarter Finals. In the Quarter Finals, Aruna faced the tournament's number one seed, Chinese player Ma Long. Long overwhelmed Aruna with fast pace, looping attacks. The match proved entertaining as Aruna was forced to play defensively and back from the table, providing some memorable rallies. Ultimately however, Long swept Aruna to move onto the Semis Aruna's run in Singles event of the 2016 Olympic games was quite easily the most remarkable achievement of his career at the world level. Having upset number 5 seed, semi-finalist in the previous Olympics, and four-time World Tour Champion as well as ten-time runner up, Aruna then also upset a European legend in Boll. Although Aruna was swept by eventual winner Ma Long, Long went onto sweep the Gold medal match as well. He was the only African competitor to reach the fourth round.
Team
Aruna competed for his home country of Nigeria alongside Segun Toriola and Bode Abiodun. The team seeded against Team China in the first round, in which Aruna played and was defeated by Ma long. The team dropped all three matches to China and were eliminated.
2017 ITTF African-Cup
Aruna competed in the 2017 ITTF African-Cup, qualifying for the quarter finals where he defeated Algerias Naim Karali. In the semi finals, Aruna defeated Egyptian player Mohamed El-beiali, qualifying for the finals. In the Finals, Aruna played and defeated long-time rival Omar Assar in a close match. Aruna won the event, and become the 2017 African-Cup Champion.
Aruna competed in the World Championships seeded as number 30. He defeated Chilean player Gustavo Gómez. He was defeated in the second round by Danish player and number 34 seed, Jonathan Groth.
2018 ITTF African-Cup
Aruna competed in the 2018 ITTF African-Cup, placing first in group 2, allowing him to qualify for the Quarter Finals. In the Quarter Finals, Aruna defeated Derek Abrefa. In the Semi Finals, he defeated Ahmed Saleh, allowing him to advance to the finals of the African-Cup.
2018 African-Cup Finals: Vs. Assar
The 2018 African-Cup Finals featured two of the only African players within the top 50 of the ITTF World Rankings, 2015 and 2016 Champion Omar Assar against reigning 2017 Champion Aruna. Assar, seeking retribution for last years defeat, played a very aggressive attacking game, winning the first two games with close scores,. The third game, entailed a dominant performance from Aruna, attacking Assar relentlessly. In the forth game, Assar targeted Arunas deep forehand forcing Aruna to play much more uncomfortably than the previous games, though Assar lost some points in an earnest attempt to end rallies early. Assar took the game. Aruna won the following two games, tying the two up 3-3. In the final game, Assar took an early lead 3-7, following a few well placed shots and missed attacks from Aruna. Aruna rallied back into an 8-10 deficit, before losing the final point on a failed forehand loop. The loss placed Aruna Second in the 2018 African-Cup. The crowd has been noted as particularly invested in the match between these two rivals. The rivalry extends beyond the two world class players, into the feud for African Table Tennis supremacy between Egypt and Nigeria, having both produced some of the continents strongest players over the last decade. This emotion is highlighted in the match's aftermath as Assar celebrated to the cheers of his fans a top the table.
Awards
Aruna Quadri won the outstanding Sportsman of the year award at the 2018 Nigerian Sports Award.