Damian McKenzie offers support for fellow injured All Black Luke Jacobson

Damian McKenzie has offered support to Chiefs and All Blacks teammate Luke Jacobson after both were ruled out of the Rugby World Cup in Japan with injury.

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Both McKenzie and Jacobson have had their World Cup dreams destroyed by injury. Source: 1 NEWS

While McKenzie's World Cup dream was shattered in April when he suffered a season-ending knee injury, Jacobson was sent home from Japan this week with concussion symptoms.

Already having come to terms with his season-ending injury, McKenzie says he's offering what support he can to Jacobson.

"I gave him a message," McKenzie told 1 NEWS.

"My thoughts are with him. A young guy like Luke, he's had an awesome season.

"Especially with concussion, you don't want to risk that.

"He's made a big call to come home and get himself right. He's a talented player. I'm sure we'll get together and watch a bit of footy at home when he's back in New Zealand."

Tasman and Highlanders flanker Shannon Frizell has been called into the All Blacks' World Cup squad to replace the New Zealand-bound Jacobson.