Gloucester are sweating over the fitness of centre Henry Trinder, who left the field eight minutes into their 48-10 Premiership win over London Welsh.
The 25-year-old, who was making his first appearance after being sidelined since September, was forced to leave the Kingsholm field with a leg issue.
Gloucester would go on to run in six tries in the comfortable triumph, but director of rugby David Humphreys admits the injury had left a sour taste at full-time.
"The injuries took the gloss off the win. I'm hugely disappointed for Henry Trinder as he has worked hard to get back," he told BBC Sport after the bonus-point win.
"Matt Kvesic has a blow to the arm. It looked serious when he came off. You fear the worst but hope for the best.
"However I'm delighted with our five points as it maintains our good start to the year. Welsh came out with an edge in the second half but we still finished with 48 points."