Perth Glory winger Andrezinho is facing a race against time to prove his fitness for Sunday's A-League grand final against Brisbane Roar at Suncorp Stadium.Andrezinho injured his groin during the second half of last week's preliminary final win over Central Coast, with subsequent scans revealing a slight tear.The 27-year-old is still holding out hope of featuring in the grand final, but must train later this week to convince coach Ian Ferguson he's fit to go.Should Andrezinho be ruled out, Todd Howarth is likely to come into the starting XI.Howarth scored the extra-time winner against Wellington Phoenix two weeks ago, and has been waiting for a chance to regain his place in the starting line-up.While Andrezinho is still touch and go for the grand final, star striker Shane Smeltz said everyone else was ready to go."Obviously any soreness kind of goes away when you've got a grand final at the end of the week, so we're looking forward to it and looking forward to the whole week," Smeltz said."They (Brisbane) are a fantastic side, they set up well and you've got to be on your game."We've got to play the best game we've played all year to win this game and I think the players know that."But we've got a couple of sessions now where we're going to work on some things and we'll cause some problems."While Brisbane Roar's fans will do their best to put off Perth by creating a sea of orange at the ground, Glory midfielder Steve McGarry hopes to ruin their party."We're not going over there just to be part of what they're calling Orange Sunday - we're going to make it, hopefully, a Purple Sunday," McGarry said."We go over there with major belief. It's going to be a difficult game because I think Brisbane are a fantastic footballing side, but they're not unbeatable."And the way we're playing now, we think we can go over there and clinch the win."