Leinster coach Matt Williams was quick to ease Ireland fears after Lions centre Brian O'Driscoll left the field clutching his chest during last night's 52-14 Celtic League victory over Pontypridd at Donnybrook.
O'Driscoll, making his first appearance of the season, scored two tries, as did Irish wing Denis Hickie.
However, Williams said: "He's had rib problems recently, but he's fine.
"I said I'd bring him off with 20 minutes to go but he said he was okay.
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"When he scored his second try with five to go we thought it best to take him off but he's okay."