Winger Penny, not selected by Wolves’ head of coaching and rugby Tony Smith for Thursday’s Super League opener against St Helens, was on the right wing for Swinton Lions in their Kingstone Press Championship opener against Halifax at Thrum Hall.
The 26-year-old, playing for his former club on dual-registration terms, sped 80 metres to finish off a scrum move and give his side a lifeline at 18-6 at half time.
It was considered to be the try of the game.
Wolves’ Jordan Burke, Rhys Evans and Andy Ackers also features in the game.
Hooker Ackers, on loan to Swinton, crossed for Swinton’s two second- half tries, the first of which was a crash-over score from close range.
But the second, which earned Swinton a bonus point in the 28-18 loss, was well and truly made in Warrington.
Full back Burke chipped the Halifax defence and regathered before right centre Evans provided the pass for Ackers to race home.
Wolves’ other player to see action at the weekend was Danny Bridge at the start of his month’s loan with Bradford Bulls.
He featured off the bench in Bulls’ 36-18 home loss to Castleford Tigers.