London, May 6 -- Essex batter Jordan Cox will have a scan on Tuesday to determine the seriousness of a side injury that could rule him out of England's Test squad to play Zimbabwe.

Cox, 24, retired hurt on 103 on day three of Essex's defeat by Somerset with a left side issue.

He walked off after reaching three figures, having sustained the injury playing a shot moments earlier, and did not field when the match concluded on Monday.

"We all heard the moment it happened when he gave a cry after playing a shot," said Essex director of cricket Chris Silverwood.

"It is too early to say how serious it is. We should know more tomorrow."

A serious diagnosis would be a cruel blow to Cox, who was set to make his Test debut last year against New Z...