© PA Photos
The hosting Poles began the half the brighter of the two nations and created their first opening with eight minutes played. Left-back Kamil Glik cut the ball back for Kamil Grosicki, but the midfielder scuffed his shot from the edge of the area and Ashley Cole headed clear.
Rooney's goal arrived with 31 minutes on the clock. Steven Gerrard won a corner, which he swung in for the Manchester United frontman, who in turn found the net with a combination of both his head and his shoulder.
Grosicki had Poland's best chance to draw level in the closing stages of the half, but he volleyed wide of the target after Robert Lewandowski had flicked a pass over the top of the England rearguard.