Denmark responded to their opening loss to Switzerland with goals from exciting teenager Christian Eriksen and Nicolai Jorgensen securing a 2-1 victory over Belarus that put the hosts into second place level on three points with their opponents.
The Swiss got off to a flying start in Aalborg with Frei netting in the first minute after latching on to a ball over the top of the defence and striking it first time.
The Danes were seeking to get their tournament back on track in Aarhus but again fell behind when Belarus's Dmitri Baga coolly rounded goalkeeper Mikkel Andersen for a simple finish.
A minute later the Danes were level after forward Jorgensen was blocked and the referee gave a penalty. Eriksen's spot-kick was saved but the ball rebounded into his path and the relieved young playmaker gratefully rolled it home for the equaliser.
