Trotters too much for Latics
Chris Eagles sealed victory in injury time as Owen Coyle's men finally got their season up and running with a hard-fought 3-1 win at Wigan.
Nigel Reo-Coker prodded Bolton's opener in the fourth minute but Mohamed Diame netted a spectacular equaliser before David Ngog's effort on the stroke of half-time.
Kevin Davies could have made certain in the 70th minute but saw his penalty well saved by Ali Al Habsi but Eagles made sure of the points in the dying seconds.
Bolton boss Coyle knew nothing more than a win would ease the pressure swirling around his side after a miserable run of 11 losses in 12 league games stretching back to last season.
Wigan never recovered after Eagles crossed for Reo-Coker to prod home just ahead of the hapless Alcaraz.
The home side were having to rely on set-pieces and Ben Watson came close to an unlikely equaliser on the half-hour when his dipping corner almost eluded Jussi Jaaskelainen.
But when Wigan's big chance came it was brilliantly executed by Diame, who unleashed a curling right-foot shot from outside the box which blazed past Jaaskelainen on 40 minutes.
However, Bolton went back in front in first-half injury-time when Davies dispossessed Steve Gohouri and fed Ngog, who shot home low to Al Habsi's right.
Dedryck Boyata should have made the points certain for Bolton in the 70th minute when he met a Martin Petrov free-kick with a low header at point-blank range but diverted it wide.
Another chance went begging when Gary Caldwell was judged to have hauled down Boyata, Al Habsi saving the penalty from Davies and Boyata blazing the rebound over. But Bolton wrapped up victory in injury time when Eagles seized on a mistake by Alcaraz to cut inside the Wigan box and drill a low shot home.