Play-off chasing Bradford slumped to their fifth-consecutive League One defeat as they went down to struggling Oldham at Boundary Park.
Wellens handed a debut to French full back Wilfried Moimbe who joined the club on deadline day from FC Nantes. The defender slotted in nicely but it was a nervy start to the game for Oldham Athletic.
McCall has handed debuts to Ryan McGowan, who received his international clearance this week, and Stephen Warnock. After featuring as a second half substitute last weekend, Matthew Lund is given his full debut in midfield. Fit-again duo Colin Doyle and Tony McMahon are included in City’s line up as well.
Adam Chicksen found space at the back post in the opening five minutes of the game but he volleyed over as Bradford went close early on.
Latics swept into a 12th-minute lead when full-back Cameron Dummigan ran at the visiting defence and launched a spectacular 25-yard drive into the top corner (1-0).
The Bantams almost hit back minutes later but Charlie Wyke’s effort in front of goal was blocked by captain Anthony Gerrard.
Midway through the half, Latics almost made it two as a corner from Ben Pringle found Dan Gardner but his header hit the top of the crossbar and went over.
Following this, Doyle made a fine save to deny Wolves loanee Duckens Nazon after the striker burst clear and fired towards the bottom corner.
Half Time – Oldham Athletic (Dummigan 12′) 1-0 Bradford City
After the restart, Gerrard blocked a cross into the box which was destined for Wyke whilst Moimbe had to be alert to head away a free kick into the box.
Bookings followed for Jack Byrne and Matt Lund as the game threatened to boil over but Latics remained disciplined and frustrated their opposition.
Bradford posed little attacking threat until the 65th minute when Callum Guy drove wide from the edge of the 18-yard box.
Athletic extended their lead on 86 minutes after Ryan McLaughlin’s cross found the head of Holloway, who peeled off at the back post, and he headed Latics into a two-goal lead (2-1).
The visitors responded two minutes later when Oldham stopper Johny Placide made a hash of Jordon Gibson’s near-post shot (2-1), but Dominic Poleon wasted their final chance as the hosts claimed their first league win of the year.
Full Time- Oldham Athletic (Dummigan 12′) (Holloway 86′) 2-1 Bradford City (Gibson 88′)
Oldham Athletic – Placide, Dummigan, Gerrard, Bryan, Moimbe, Fane, Gardner (67’), Byrne (73’), Pringle, Nazon (62’), Davies.
Subs – De La Paz, Wilson, Benyu, Nepomuceno, Holloway (62′), Obadeyi (73′), McLaughlin (67′).
Bradford City – Doyle, McGowan, Chickson, Kilgallon, Vincelot (73’), Wyke, McCarton (80’), Warnock, Guy, McMahon, Lund (62’).
Subs – Raeder, Brunker, Knight-Percival, Grodowski, Dieng (62′), Poleon (73′), Gibson (80′).
Attendance: 5,526 (1,967 visiting supporters)