The Channel Seven personality, who is the younger brother of AFL chief executive Gillon McLachlan, fell off his horse and was then trampled by another.

McLachlan is in the Alfred Hospital with six broken ribs and a collapsed lung, but is expected to recover.

He told 3AW he was lucky to not be more severely injured.

Channel Seven released a statement confirming the accident:

"Yesterday afternoon Hamish had a tumble from his horse, resulting in a couple of broken ribs," the statement said.

"He is recovering in hospital and is in good spirits.

"He is expecting to return home in a day or so.

"Hame's return to air will be planned once he is back on his feet and feeling fit and ready to go."

McLachlan is an experienced horseman.

He started his career in sports management and was behind failed venture the AFL Hall of Fame and Sensation exhibition in Melbourne, which closed after just two months with $2 million debt.

But calling horse sports, including polo, gave him his start in the television industry.

Both brothers play polo, and they grew up on a South Australian farm where their parents rode horses.

Hamish regularly hosts and acts as master of ceremonies at exclusive polo events and is listed as vice-president of the Victorian Polo Association.

He also calls AFL football for Channel Seven, and is part of the network's racing and tennis coverage, among other roles.

McLachlan was a part of Seven's Rio Olympics coverage in 2016, and hosts AFL Game Day, Seven's Sunday football program, during the AFL season.

He called AFL on Triple M radio until 2014.