A veteran tennis player who was enriched by his broad range of achievements and courses attended throughout the years. Hassan Bohari had been to several countries representing Singapore and bringing home numerous titles, namely Junior Champion (Under 18)-Asian Junior Tennis Championship - Manila (1974), Champion - Chua Choon Leong Cup, Inter-state Tournament in Malaysia (1977), National Champion (Doubles) - Pesta Sukan (1977-79, 1981-82), Double Champion - Malacca Open (1981-82), Borg Open Champion (Single) (1989), National Champion (Single) - Pesta Sukan (1990), Master Championship - Single & Double Champion (1992-93), Bronze Medal - Singapore Ladies Tennis Team in South East Asia (SEA) Games (1993), Bronze Medal - SEA Games Team, Chiangmai (1995), Open Double Champion - Pesta Sukan (1997), Champion in 'B' and 'C' Divisional Girls for 3 consecutive years - (Raffles Girls' School) in Inter School Tennis Tournament (1992-95, 1997-98), and Champion in 'B' and 'C' Divisional Boys for 4 consecutive years - (ACS Independent School) in Inter School Tennis Tournament (1996-99).

He had joined the South East Asia (SEA) Games Team in 1977 & 1991, the Davis Cup Team, UAE, Dubai in 1996 where he was promoted to group 2 and the National Level Tennis Tournament from 1974 to 1991. He had also received certification from the USPTR (1984), International Tennis Federation (ITF) of different countries from 1989 until 1997, USPTA, STECA Seminar - Tioman Island, Malaysia (1996), and SSC Level 1 & 2 Coaching (1996). Since 1993, Hassan has been imparting all his learning and expertise through coaching with different teams and schools, such as Singapore Ladies Tennis Team - South East Asia (SEA) Games, South East Asia (SEA) Games Team, Davis Cup Team, Raffles Girls' School Tennis Team, Anglo Chinese School (Independent), and Singapore Island Country Club.