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|Full name||Mustafa Mahdi Al-Bassas|
|Date of birth||June 2, 1993|
|Place of birth||Jeddah, Saudi Arabia|
|Height||1.72 m (5 ft 7 1⁄2 in)|
|2011–||Saudi Arabia U-23||6||(0)|
* Senior club appearances and goals counted for the domestic league only and correct as of 4 May 2015.
Mustafa began and spent all of his career to date with Al-Ahli. He played for the Al-Ahli academy junior and youth teams. Bassas plays in more than one position: right back, central midfielder, attacking midfielder, winger, and second striker. He is known for his pace, shot power, and leadership skills . Czech coach Karel Jarolím gave him his debut in the Al-Ahli first team.
In the 2012 AFC Champions League, Bassas played in his first rivalry match in Jeddah against Ittihad, proving to be best player on the pitch, showing a lot of skill and talent when on the ball even though his side lost the first leg 1-0. The second leg however was won by Al-Ahli 2-0, with Bassas producing a man of the match display with an assist to Victor Simões, who also scored the second goal in the 83rd minute and to help the team qualify to the final against eventual winners Ulsan Hyundai. Al-Bassas helped Al-Ahli in obtaining Saudi Federation Cup 2012-13. Al-Ahli fans chose Al-Bassas as Player of the Season in 2012-13.
Al-Bassas has played 10 matches and scored 4 goals in the 2013 AFC Champions League. His 4 goals were against Al-Gharafa, He scored twice against Sepahan and once against El-Jaish. Al-Bassas has played 19 matches in the 2012–13 Saudi Professional League this season and scored 5 goals.
In 2013, Al-Bassas is featured, alongside Lionel Messi, on the official cover of the video game FIFA 14 as distributed for the Middle East for all platforms except the Wii and Nintendo 3DS versions. He did not appear on the PlayStation 4 and Xbox One versions of the game either, although those versions featured a revised cover.
- Saudi Federation Cup: 2012–13
- AFC Champions League Runner-up: 2012
- Saudi Professional League: Runnner-up: 2014-15 Winner: 2015-16
- Saudi Crown Prince Cup : 2014–15
- King Cup : 2016
- Saudi Super Cup: 2016
- Saudi Arabia U-23
- "Al Ahli 2-0 Al Ittihad (2-1 agg.)". the-afc. Retrieved 2012-10-31.
- "Ulsan Hyundai win 2012 AFC Champions League". the-afc. Retrieved 2012-11-10.
- نجم الموسم جماهير الأهلي عبر الإمبراطور تختار [مصطفى بصاص] نجماً للموسم و تتوجه بـ [الكرة الذهبية] (in Arabic). Al-Ahli website. Retrieved 2013-10-16.