Ulster's Andrew Trimble hamstring problem is not a major concern

Trimble reported to the Irish camp this week with a tight hamstring following Ulster's defeat to Llanelli on Friday.

The Ulster winger did some training following treatment but did not participate in sprinting.

"There is a slight tightness, but we are not too concerned at this stage," said a spokesman.

Trimble is due to be named in coach Eddie O'Sullivan 22-man match squad on Wednesday, and is expected to make the starting line-up against the Springboks.

"At present Andrew is the only concern," the spokesman added.

"The Leinster players spent Monday at rehab following their game with Edinburgh on Sunday, while a number of other players had bumps and bruises from the Heineken Cup games."