Return to play (RTP) criteria reaching consensus in round 2
| RTP criteria | MEAN | SD | Coefficient of variation | Percentage agreement | |
| 1 | Perform maximal sprints | 4.88 | 0.33 | 6.80 | 100.00 |
| 2 | Complete at least one football-specific field testing session at maximal performance and under fatigue conditions | 4.65 | 0.49 | 10.60 | 100.00 |
| 3 | Perform a progressive running plan with running performance eventually matching preinjury levels | 4.65 | 0.49 | 10.60 | 100.00 |
| 4 | No pain in the muscle | 4.65 | 0.79 | 16.91 | 94.12 |
| 5 | Achieve maximal linear speed | 4.59 | 0.51 | 11.06 | 100.00 |
| 6 | Player’s self-reported feeling of confidence and readiness to RTP | 4.53 | 0.62 | 13.78 | 94.12 |
| 7 | Full hamstring muscle strength as compared with the uninjured side and/or to preinjury benchmark values | 4.47 | 0.62 | 13.96 | 94.12 |
| 8 | Full muscle flexibility, equal to the uninjured side and/or to preinjury benchmark values | 4.41 | 0.51 | 11.50 | 100.00 |
| 9 | Complete at least two full trainings with the team prior to be available for match selection | 4.24 | 0.83 | 19.63 | 88.24 |
| 10 | Reach Global Positioning System (GPS)-based targets of external load, based on player-specific or position-specific match markers, which include number of sprints, accelerations, decelerations, changes of direction, maximal speed, high-speed running distance | 4.18 | 0.88 | 21.14 | 82.35 |
| 11 | Good lumbopelvic motor control | 4.12 | 0.78 | 18.97 | 76.47 |
| 12 | No adverse gait patterns on review with video analysis | 3.88 | 0.78 | 20.12 | 64.71 |
| 13 | Recovery of full aerobic and anaerobic fitness performance | 3.76 | 0.44 | 11.61 | 76.47 |