The 29-year-old was stretchered off the pitch during the first half of Boro's pre-season friendly away to York City on Saturday.
Baptiste came off second best when he challenged for the ball with an opponent.
The club has yet to confirm the extent of the injury.
Baptiste joined Middlesbrough from Blackburn Rovers at the start of the month.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Sheffield UnitedSheff Utd | 21 | 14 | 5 | 2 | 30 | 11 | 19 | 45 |
| 2 | Leeds UnitedLeeds | 21 | 12 | 6 | 3 | 37 | 15 | 22 | 42 |
| 3 | Burnley | 21 | 11 | 8 | 2 | 26 | 8 | 18 | 41 |
| 4 | Sunderland | 21 | 11 | 7 | 3 | 32 | 17 | 15 | 40 |
| 5 | Blackburn RoversBlackburn | 20 | 11 | 4 | 5 | 25 | 17 | 8 | 37 |
| 6 | Middlesbrough | 21 | 10 | 4 | 7 | 35 | 25 | 10 | 34 |
| 7 | Watford | 20 | 10 | 4 | 6 | 29 | 26 | 3 | 34 |
| 8 | West Bromwich AlbionWest Brom | 21 | 7 | 11 | 3 | 24 | 16 | 8 | 32 |
| 9 | Sheffield WednesdaySheff Weds | 21 | 8 | 5 | 8 | 26 | 30 | -4 | 29 |
| 10 | Swansea CitySwansea | 21 | 7 | 6 | 8 | 23 | 22 | 1 | 27 |
| 11 | Bristol City | 21 | 6 | 9 | 6 | 26 | 26 | 0 | 27 |
| 12 | Norwich CityNorwich | 21 | 6 | 8 | 7 | 36 | 32 | 4 | 26 |
| 13 | Millwall | 20 | 6 | 7 | 7 | 20 | 18 | 2 | 25 |
| 14 | Luton TownLuton | 22 | 7 | 4 | 11 | 25 | 38 | -13 | 25 |
| 15 | Derby CountyDerby | 22 | 6 | 6 | 10 | 27 | 28 | -1 | 24 |
| 16 | Coventry CityCoventry | 21 | 6 | 6 | 9 | 27 | 30 | -3 | 24 |
| 17 | Preston North EndPreston | 21 | 4 | 11 | 6 | 21 | 27 | -6 | 23 |
| 18 | Stoke CityStoke | 21 | 5 | 7 | 9 | 23 | 28 | -5 | 22 |
| 19 | Queens Park RangersQPR | 21 | 4 | 10 | 7 | 21 | 27 | -6 | 22 |
| 20 | Oxford UnitedOxford Utd | 20 | 4 | 6 | 10 | 21 | 33 | -12 | 18 |
| 21 | Cardiff CityCardiff | 20 | 4 | 6 | 10 | 19 | 32 | -13 | 18 |
| 22 | Portsmouth | 19 | 3 | 8 | 8 | 21 | 34 | -13 | 17 |
| 23 | Plymouth ArgylePlymouth | 20 | 4 | 5 | 11 | 19 | 42 | -23 | 17 |
| 24 | Hull City | 21 | 3 | 7 | 11 | 19 | 30 | -11 | 16 |
| > Championship Full Table | |||||||||
