The Championship side found themselves short at the back after James Husband sustained a shoulder injury, which will sideline him for three months.
The South Korea international is yet to feature for parent club Queens Park Rangers this season.
Yun, who is on the bench for the Doncaster's game against Middlesbrough this evening, is to remain at the Keepmoat until December 31.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Walsall | 28 | 18 | 5 | 5 | 54 | 30 | 24 | 59 |
| 2 | Doncaster RoversDoncaster | 29 | 15 | 7 | 7 | 42 | 32 | 10 | 52 |
| 3 | Notts County | 28 | 14 | 8 | 6 | 45 | 28 | 17 | 50 |
| 4 | AFC Wimbledon | 27 | 14 | 6 | 7 | 39 | 20 | 19 | 48 |
| 5 | Crewe AlexandraCrewe | 29 | 12 | 12 | 5 | 36 | 25 | 11 | 48 |
| 6 | Port Vale | 28 | 13 | 9 | 6 | 35 | 29 | 6 | 48 |
| 7 | Bradford CityBradford | 28 | 13 | 8 | 7 | 38 | 28 | 10 | 47 |
| 8 | Salford City | 28 | 12 | 8 | 8 | 33 | 26 | 7 | 44 |
| 9 | Grimsby Town | 29 | 13 | 3 | 13 | 40 | 45 | -5 | 42 |
| 10 | Chesterfield | 28 | 10 | 9 | 9 | 43 | 32 | 11 | 39 |
| 11 | MK Dons | 28 | 11 | 5 | 12 | 42 | 40 | 2 | 38 |
| 12 | Cheltenham TownCheltenham | 28 | 10 | 8 | 10 | 37 | 39 | -2 | 38 |
| 13 | Colchester UnitedColchester | 28 | 8 | 13 | 7 | 33 | 29 | 4 | 37 |
| 14 | Swindon TownSwindon | 30 | 9 | 10 | 11 | 43 | 44 | -1 | 37 |
| 15 | Fleetwood TownFleetwood | 27 | 9 | 9 | 9 | 37 | 35 | 2 | 36 |
| 16 | Bromley | 28 | 8 | 11 | 9 | 36 | 37 | -1 | 35 |
| 17 | Gillingham | 27 | 9 | 5 | 13 | 25 | 29 | -4 | 32 |
| 18 | BarrowBarrow | 28 | 8 | 7 | 13 | 27 | 32 | -5 | 31 |
| 19 | Newport CountyNewport | 27 | 8 | 6 | 13 | 35 | 46 | -11 | 30 |
| 20 | Harrogate TownHarrogate | 30 | 8 | 6 | 16 | 25 | 41 | -16 | 30 |
| 21 | Accrington StanleyAccrington | 27 | 7 | 8 | 12 | 34 | 45 | -11 | 29 |
| 22 | Tranmere RoversTranmere | 28 | 6 | 8 | 14 | 21 | 46 | -25 | 26 |
| 23 | Morecambe | 28 | 6 | 5 | 17 | 26 | 44 | -18 | 23 |
| 24 | Carlisle UnitedCarlisle | 28 | 5 | 6 | 17 | 22 | 46 | -24 | 21 |
| > League Two Full Table | |||||||||
