Gylfi Sigurdsson struck either side of the interval to secure a deserved 2-0 victory for 10-man Swansea at the Premier League basement boys Wigan.
Sigurdsson curled home from similar positions to turn the screw on former Swans chief Roberto Martinez.
The visitors could even afford to play out the final half hour without Nathan Dyer, who was sent off for a high challenge on Jordi Gomez.
Dyer had impressed most, charging on to Sigurdsson's defence-splitting pass before bringing an excellent low save out of Ali Al Habsi. The winger then turned provider in much the same way as Sigurdsson had done to set up Scott Sinclair. He skipped round Al Habsi, then turned the ball goalwards, only for James McCarthy to bundle off the line.
Earlier, Sinclair rasped a half-volley wide as Swansea enjoyed their usual dominance of possession. Franco di Santo appeared to duck under a cross from Jean Beausejour when all it needed was a firm touch.
Emmerson Boyce brought a decent low save out of returning keeper Michel Vorm. Sensing Wigan had momentarily fallen asleep before the break, Sigurdsson took his chance, curling a shot into the top corner that gave Al Habsi no hope.
Martinez opted to make a double change at half time, introducing Victor Moses and Mohamed Diame. Far too quickly though, they found themselves two adrift after Moses tripped Dyer just outside the box.
Sigurdsson found himself in roughly the same position as the one he had previously scored from - and he promptly did exactly the same thing.
On another day, referee Andre Marriner may not have felt Dyer's high tackle on Gomez warranted a dismissal but opted to produce a red card on this occasion.
With nine minutes remaining, substitute Hugo Rodallega brought an excellent save out of Vorm.