RICHMOND'S Graham Polak has left hospital and is now at home.

Polak was hit by a tram in late June and was initially held in a medically-induced coma, but has steadily improved to the extent that he was allowed to go home for several hours to watch his beloved Tigers play a couple of Saturdays ago.

Coach Terry Wallace said he was rapt with the news that the 24-year-old had improved enough to be allowed to continue his rehabilitation from home.

"We are thrilled that Graham has been able to show doctors at the Epworth Rehab Centre enough positive signs that he can return home," he said on Tuesday.

"Graham still has a long way to go in his recovery, but this is considered another positive step."

Polak hasn't been into the club since the accident, although Wallace expects that to happen soon.

"No, not as yet. I think he's just continuing on with his rehabilitation.

"I would think within the next fortnight that rehabilitation will be conducted down at the footy club."

Mark Coughlan is also going well as he recovers from chronic hamstring problems following two knee reconstructions.

Coughlan has been playing with Richmond's VFL affiliate Coburg after his trip to Germany for treatment in May, and is still a chance to play senior football this year after three matches in the VFL so far.

The 26-year-old showed promising signs in his last hit-out against Williamstown two weeks ago before having last weekend off due to a bye in the VFL. He had 19 possessions in 50 per cent of game time and won and used the ball well.

"It's a wait-and-see – he's played now a couple of games, two or three games, in a row," Wallace said of the 2003 best-and-fairest winner. "He's performed better in each of those games.

"He's probably done it more on courage and head-over-the-ball stuff than ability to run and spread and create, which is the next level of footy.

"I would sort-of say that realistically he's still a bit off the mark at the moment, but two or three weeks of continuity in footy, you don't know."