Kiwi Steve Williams says he broke his rule of not watching golf to tune in to witness his old colleague Tiger Woods' unlikely run towards a fifth Masters crown.

Williams, whose very public fallout with Woods in 2011 ended a partnership of more than a decade, says he doesn't watch golf anymore but made an exception this week to follow the 43-year-old's dramatic win at Augusta.

"Since I retired after caddying for Adam Scott – and before him Tiger Woods, Ray Floyd, Greg Norman, Ian Baker-Finch, Michael Clayton and others – I've gone back to playing the game I love," Williams wrote on the Players Voice website.

"And I try to keep up with the news and will read about golf – but I just don't watch it. Ever.

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"Except for last Monday."

[Read more: Tiger's secret - Steve Williams reveals tragic event behind Masters miracle]

Williams said he couldn't miss the chance to see if Woods could win his fifth Masters, and was glad he tuned in.

"Fourteen years! It's almost impossible to believe. And it had been 11 years since his last major – the US Open at Torrey Pines – which he had no right to win thanks to his torn cruciate ligament and fractured tibia.

"But that's Tiger Woods – he does things no-one else could dream of doing."

Woods' win snapped an 11-year major drought, who less than two years ago was struggling to walk following a fourth back surgery and had dropped to outside the top 1000 in the world rankings.

Williams was dumped by Woods in June 2011 – ending a 13-year relationship in which he won 72 times worldwide and claimed 13 majors.