Wolverhampton and Poole both have significant injury concerns ahead of tonight's Elite League clash at Monmore Green.
Both took part in away matches last week without two of their top three riders and achieved reasonable results under the circumstances, but need to get back to full strength.
Wolves travelled to Ipswich and Arena-Essex without Billy Hamill and Fredrik Lindgren, but hope that both are fit to resume tonight. Hamill has been struggling for the last fortnight with a serious burn to his thigh whilst Lindgren sustained internal bleeding to his leg after a crash in Sweden last Tuesday.
However, the young Swede intended to take his place in the World Under-21 qualifying meeting at Holsted in Denmark yesterday, and assuming he came through that with no ill effects, he should return for Wolves.
Poole are definitely without Polish star Krzysztof Kasprzak who broke his collarbone in the Pirates' home win over Peterborough last week, but Grand Prix rider Bjarne Pedersen intends to make his comeback from a wrist injury.
Wolves boss Peter Adams made public the club's concerns over the form of Magnus Karlsson last week - but also emphasised that there were no ultimatums at this stage for the struggling Swede.
Adams said: "There's no deadline as the way our fixtures are panning out, it's going to be a long time before our averages change. We're not under pressure, but we can't let it go on all season long."
Coventry also have a home match tonight as they face table-topping Peterborough with the reigning Champions desperate to kick-start their season.
Their strong away form of 2005 has deserted them so far this year and their lack of home meetings has seen them slip down the table.
Their home match against Swindon on Friday was postponed due to heavy rain which moved in just around start-time and the Bees, like Wolves, have only raced four home Elite League matches with several other clubs having raced as many as seven.
Even so, the form of certain riders is a cause for concern for the Coventry management and speculation has been rife that they are contemplating making a change.
Co-promoter Colin Pratt said: "We are all aware that one or two riders have had a disappointing time so far, and we do need to sort things out there.
"A few things have gone against us in the early weeks, but now we need to get our fingers out and make sure that we start moving up the table.
"We're now in a very busy period with several matches throughout the month of May, and we need to be collecting plenty of points now to keep us in with a chance later on in the season.
"Peterborough started the season as hot favourites and moved to the top of the League a couple of weeks ago. They look to be a strong side on paper and we know that we are going to be in for a tough test."