[2] His greatest success as a junior player was winning the Orange Bowl doubles tournament with Ivan Ljubičić in 1995.

[citation needed] In October 2007, upon recommendation by Ivan Ljubičić, he became the coach of Dinara Safina,[4][6] who was at the time at a psychological low point of her career, ranked No.

[5][7] Under Krajan's lead, Safina scored good results in the early 2008 season and placed runner-up in the 2008 French Open.

After the 2008 French Open, Krajan was joined by Dejan Vojnović, retired Croatian Olympic sprinter, who became Safina's fitness coach.

[9] Safina described Krajan as "totally different from any other tennis coach" due to his patience and positive approach, as opposed to being preoccupied with correcting flaws in one's game.

[15] In August 2012 Krajan began coaching Laura Robson, until they parted ways in May 2013, before the Mutua Madrid Open.