The Chiefs take on Sale Sharks in this Saturday's crunch Aviva Premiership encounter.
With just three league games remaining, the battle to qualify for next season's new-look European Champions Cup is intensifying.
The Chiefs need to be end the season in sixth place in the Premiership to be guaranteed a place.
Coach Rob Baxter is conerned by the number of penalties his side gave away to Worcester in last weekend's narrow win.
They've been working on it all week.
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