Broom broke a bone in his hand late last month in a match against Wellington at the Basin Reserve and was expected to be available for the match against the Canterbury Kings in Christchurch on February 2.
But the 35-year-old had come through a net well on Wednesday and was getting some time out in the middle yesterday when the squad had an internal game at Sunnyvale.
Volts coach Rob Walter said Broom has made a bit of progress with the injury and it was hoped he would be able to play on Sunday. A decision was likely to be made today on whether he would play.
Broom's experience is vital for the Otago side and would give it a boost in its match on Sunday.
Mark Craig is also making some progress with his back injury and could be a contender for the match against the Kings.
Whatever happens with Broom and Craig, Otago is looking forward to getting on the park, having played just two games in three weeks because of wet weather.
"With that it can be quite difficult to find momentum ... but you just get on with it. We play intersquad games along the way and do other things to keep up that competitive edge,'' he said.
"Players are paid to both train and play, but we have been doing a lot more training than playing at the moment. Hopefully we can play well enough to get into the playoffs and play some more.''
New Zealand Cricket had spread out the twenty20 competition this year to try to get the crowds up, with games played at the weekend.
Otago sits fourth on the Super Smash twenty20 ladder on 12 points, while Wellington in fifth on 10 points. Auckland sits third with 16 points.
Walter said depending on other games, the game was one where a win would keep teams in touch while a loss could drop the beaten side well out of the hunt.
He said preparation has been thorough and Wellington presented a strong challenge. Otago had played Wellington in the one day final and lost in a close match.
Wellington had a strong top order and good bowling attack, so presented a tough challenge. The first thing was to get the game under way after the past two games at the University of Otago Oval had been washed out.
