the worlds of football and rugby have collided in a crossbar challenge between england stars by taking a quick word of advice before ` nailing ' his opening attempt at kicking a conversion - while cahill seemed more concerned by wearing an oversized shirt .
the sports superstars pose for a picture before taking part in the crossbar challenge with a twist .
howell slumps to the floor after missing the crossbar with an embarrassing attempt .
cahill 's request to dedicate his kick to st george 's day was agreed to oxlade-chamberlain .