His father, Johan, is the former commissioner of the Sunshine Tour in South Africa, while his older brother Mark is a broadcaster, teaching pro, and collegiate golf coach.

He has four wins on the European Tour and in 2004 became the first man to successfully defend the South African Open title since Gary Player in the 1970s.

In 2006 Immelman won his first PGA Tour event at the Cialis Western Open, a result that moved him into the top 15 in the Official World Golf Rankings.

In September 2007, Trevor Immelman was picked by Gary Player to participate in the 7th Presidents Cup held at the Royal Montreal Golf Club, Canada.

[3] On 13 December 2007, Immelman withdrew from the South African Airways Open due to severe discomfort around his ribcage area and a problem breathing.

He went into surgery the following Tuesday, 18 December 2007, and doctors discovered a lesion approximately the size of a golf ball on his diaphragm.

In June 2009, Immelman announced he would withdraw from the U.S. Open due to tendonitis in his left wrist and elbow,[6] which plagued him for much of the 2009 and 2010 seasons.

In September 2022, Immelman captained the International team in the 2022 Presidents Cup at Quail Hollow Club in Charlotte, North Carolina.

He has frequently participated in his mentor Gary Player's charity golf events around the world to help raise funds for children's causes.

QF, R16, R32, R64 = Round in which player lost in match play Note that the HSBC Champions did not become a WGC event until 2009.