Mark has played on a number of Tours around the world since turning Professional in 1996.
Brown played in the tour of Australasia, Canadian tour and Asian tour without much success until 2007 where he posted 4 top ten finishes in the Asian Tour. In 2008 he won the Sail Open Golf Championship followed by the Johnnie Walker Classic which propelled his ranking to 64th in the world making him the highest ranked golfer in New Zealand.
Since then Brown has mainly played on the Australasian tour with his most notable win being a 2nd place finish in the 2014 NZ Open.
In 2017, Mark finished 4th in the Coca- Cola PGA Championship and T10 at the Northern Territory PGA Championship
- Played The Open Championship in 2013 after winning International Final Qualifying.
- In 2013 set the Kingston Heath course record at 62.