Career
He was a physical player who was apt in the air and a lethal poacher in front of the goal. In addition to goal scoring, his "runs always attract the attention of defenders". Early career
He began his career with the amateurs of Excelsior"20, then went to Sparta Rotterdam, playing there for five seasons.
Arizona
In 2005 he switched to Arizona, where he started as a second-choice centre forward, although he bagged numerous goals.
His breakthrough would be in 2006-2007, being one of Eredivisie"s top scorers with 22, and reaching the Netherlands national football team, aged 28. Koevermans rejected a contract offer from Arizona to extend his tenure at the club and his manager Louis van Gaal informed him that he would not be a first-team regular from then on with this resulting in his pushing for a move to another club
PSV Eindhoven
Late August 2007 he joined PSV Eindhoven for a fee of €6 million where he received the number 10 jersey, last worn by Ivorian striker Arouna Koné, who was sold to Sevilla Football Club. Toronto Football Club
On 29 June 2011, it was announced the Koevermans had reached an agreement to join Major League Soccer team Toronto Football Club as a designated player. The signing of former German International Torsten Frings was announced at the same press conference.
Koevermans made his debut for Toronto in a 1–0 home defeat to Football Club Dallas on 20 July 2011.
Koevermans scored his first goal for Toronto on a cross from Ryan Johnson three days later against Sporting Kansas City in a 4–2 away loss. Koevermans was awarded Master of Library Science Player of the week for his two-goal performance against Colorado Rapids on 17 September, leading Toronto to a 2–1 home victory over the reigning league champions. After failing to score in the first six games of the 2012 season Koevermans scored his first goal against Montreal Impact on 7 April, the game finished in a 2–1 away loss for Toronto.
With Kovermans in fine scoring form he suffered a season ending Anterior Cruciate Ligament injury in mid-July against New England Revolution.
Following his injury Toronto was forced to bring in designated player Eric Hassli as a replacement. Koevermans made his return from injury nearly a year later on 1 June 2013 as a second half sub for Jeremy Brockie in a 1–1 against Philadelphia Union.
Football Club Utrecht
On January 31, 2014 it was announced that Koevermans had signed a deal until the summer of 2014 with Football Club Utrecht. On March 20, 2014 Koevermans announced his retirement from football due to a persevering calf injury.
He made his international debut for the Netherlands in a Euro 2008 qualifier against Slovenia on 28 March 2007.
He scored his first international goal on 17 November 2007 against Luxembourg.