The Iranian winger drilled a shot into the bottom corner of the Bournemouth goal and his team won the match 2-0.
Having scored his 1st goal for the club, he appeared close to tears on the pitch and was crowded around by his team-mates.
The 26-year-old player joined Brighton 18 months ago.
Following Andranik Teymourian and Ashkan Dejagah, Brighton's Alireza Jahanbakhsh became the 3rd Iranian footballer to score in Premier League history.
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