The English-born back-rower - who completed his Wales residential qualification this year - immediately hared for the corner, surely impressing watching Wales coach Warren Gatland.
On 19 minutes Bellamy played a one-two with Gareth Bale and hared away towards the Polish goal, only for the covering Michal Zewlakow to clear the danger as Bellamy chipped over onrushing keeper Lukasz Fabianski.