
Pete Sampras is one of the all time tennis greats having collected 14 grand slams during his illustrious career. He collected 12 of those between 1993 and 2000.

Sampras won half of his majors at Wimbledon, despite admitting to "hating" the grass surface in his early days. He defeated Jim Courier for his first crown in 1993 and won his last in 2000 against Australia's Patrick Rafter when he became the first man to reach 12 grand slam titles.

After that last Wimbledon triumph it would be two years until Sampras captured his 14th and final major, at the 2002 U.S. Open. He defeated his arch rival Andre Agassi in the final.

Roger Federer overhauled Sampras' mark in 2009 when he beat Andy Roddick for his 13th major title. Sampras was in the crowd to see the Swiss eclipse him. "I was resigned when I saw Roger do it," Sampras told CNN. "Sure, I would have loved for my 14 to last forever but it was meant to be broken."

Sampras and Federer met just once in competition, at Wimbledon in 2001. The Swiss knocked the defending champion out in the fourth round at the All England Club.

The pair have since played in a number of exhibition matches. "With Roger I'm amazed," Sampras said. "He's 34 now, he's still ranked three in the world. He's competing for majors, he's still playing great tennis. He's almost playing better now than he did ten years ago. He's improving!"

Sampras thinks the old "big four" has shrunk to become the "big two" comprising just Federer, Novak Djokovic with Rafael Nadal and Andy Murray dropping out. On Djokovic he says: "Truly he's one of the greats of all time. If he keeps this up over the next three, four years, he could very well pass me and get to 16, 17."

He might be one of the game's greats but Sampras sometimes struggles to make his voice heard at home with his sons Ryan (pictured here in 2009) and Christian. "These kids just don't listen to me! You know I tell them something to do and they do the complete opposite. It's tough being a parent these days."

Sampras has eschewed the coaching route and apart from the odd game of tennis or golf, is focusing on being a parent. "I don't want to travel and be at these events for more than a couple of days," he said. "I just don't have it in me to put in the work."