Newcastle trainer Sam Kavanagh died overnight after losing his battle with cancer.

Racing expert Andrew Hawkins confirmed the news on Saturday morning, calling it “devastating”.

Kavanagh — who was was diagnosed with oesophagus cancer last year — was just 38 years old.

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The son of famous trainer Mark Kavanagh, Sam was a much-loved figure but a controversial one. In 2015 he was banned for nine years for cobalt-related offences (it was later reduced to four years).

But he had been rebuilding his career and his last runner on Monday, Sharpen The Knives, was a winner.

While people in the industry were aware of his health battle, the news of his death was still a surprise.

Hawkins said Kavanagh had a turbulent training career but owned his mistakes and was rebuilding successfully.

“I’m proud to have called him a friend,” Hawkins said.

“Sam and I sat down a couple of weeks ago to chat about how things were going. He was extremely optimistic about his treatment and how things were going for the future.

“Sadly, complications last night proved too much after a tough cancer battle.”

Bloodstock agent Stephanie Grentell said although we all knew how ill he was, “this news has still knocked the wind out of me”.

“I hope his wife and daughter know they have the whole industry behind them.

“This news really puts life and our daily struggles into perspective. A young man, a father, a husband and a friend taken far too young.”

Hawkins agreed.

“Exactly right, it was not unexpected but it’s still so shocking,” he said.

Racing identity Peter O’Brien said: “A wonderful human and he will be sorely missed.”

While a friend called him “true and loyal … who was loved by all that came into contact with him”.

“I am going to miss our chats , your unrelenting positivity, even in the closing weeks . My thoughts are with Kelly and Sienna and may they have the strength needed in the days and years ahead,” he said.

Veteran journalist Danny Power also called it “shocking news”.

“Sam was so positive after recent treatment. A really nice bloke, gone too soon. My best wishes and condolences to his family and close friends,” Power said.

And broadcaster and author Bruce Clark said: “Sam Kavanagh’s glass was always overflowing, a $66 shot, he’d tip it big and back it so. Asked ‘are your affairs in order’ when diagnosed with stage 4 cancer, he told his wife he was OK if she remarried, then went out and bought yearlings. RIP my friend.”

Kavanagh is survived by his partner, Kelly, and 11-year-old daughter, Sienna.