Originally Posted by THUNDERVOLLEY
Sampras felt he had given his all to his career, and wanted to leave on top--winning a major. It be pointless to continue in major after major, revealing to all the worlds that many have your number and your "prime" is just a distant memory of the past. Think of Federer: he barely won another major after two year bust, and then USO '12, AO '13arrived and passed, with Federer's skills dulled in both. then, there was the Olympics, where he was soundly defeated. He is at the exact point of Sampras--more or less--and needs to consider his legacy.
It's a common misconception that Sampras retired after winning 2002 USO (left at the top), he was announcing his participation in many tourneys next year but was pulling out eventually out of each one (like say Nadal did since Wimbledon last year), it wasn't until Wimbledon was around the corner and Sampras couldn't motivate himself to train even for his most beloved tourney that he decided to call it quits.