A first half goal from Antoni Sarcevic proved to be the difference between the two sides during a below-par first half from the visitors.
Stags did have a good chance to level with Michael Smith missing an excellent chance close to half-time.
Harry Lewis was the stand-out performer with a number of good saves to keep Stags in the game.
Here is how we rated the performances today (First 80 mins only). Give us your ratings verdict and thoughts on the result via our social media channels.
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1. Harry Lewis - 9
Only found out he was starting minutes before the game. Made two good early saves and two even better stops to keep Stags in the game just before half-time. Photo: Getty Images
2. Kyle Knoyle
Didn’t get much help down his flank defensively during a difficult first half. Generally though he stood firm for the task faced and kept it tight when needed Photo: UGC
3. Deji Oshilaja - 7
Alert to the danger and read the play well to nip Bradford attacks in the bud but was under the cosh with the back three not getting enough protection from the midfield in the opening half. A much more comfortable second as Stags pushed. Photo: UGC
4. Ryan Sweeney - 7
Solid in the air and the tackle but his lack of pace was exposed on a number of occasions during a tough first 45 minutes. Had things much more his own way after the break. Photo: UGC