The funeral service was being planned for Friday, Mr Greeves said.
Friend Ricky Welsford said friends of Mr Ford-Greeves were "roughed up" by the death.
"He was a real good guy. I still can't get my head around it."
Mr Welsford, a Taieri Amateur Wrestling Club member, said he dedicated the title he won at the New Zealand national wrestling championships in Dunedin at the weekend to Mr Ford-Greeves, a former club member.
"He was a good wrestler and a well-rounded guy."
Mr Ford-Greeves had stopped wrestling at the club about three years ago.
If Mr Welsford had continued wrestling he could have been competing at the nationals and "dodged" the crash.
"If he was wrestling on the weekend, he wouldn't have been out driving."
Sergeant Ed Baker, of Dunedin, said a 25-year-old woman was in a critical but stable condition on Sunday.
Police had not spoken to the woman yesterday and were unaware if her condition had improved.
The vehicles, a white Mitsubishi saloon, and a red Holden saloon, were extensively damaged in the collision after one crossed the centre line, Sgt Baker said.