Midway through the 2nd half of Leinster's 22-16 win over Munster at Thomond Park, Leinster scrum-half, Isaac Boss, sent up a box kick which Dave Kearney chased. While making the catch, Kearney was knocked to the ground by Munster fullback, Felix Jones.
Laying on the ground, Kearney placed the ball which Paul O'Connell then kicked but in the process also made serious contact with the Leinster winger's head.
Kearney was taken from the pitch on the medical cart.
GIFs of the incident below.