Risk statement - Given that the activities involved in "X" sport may result in catastrophic injury, there is the likelihood the candidate may not be able to report for I-Day due to that injury.
Likelihood? 1 - 2
Consequence? 4 - 5
Likelihood is the assessment on whether or not an event will take place. Consequence is the severity if that specific likelihood actually happened.
A 1X1 means there is very little risk of a very small consequence. A 5X5 means a very high risk of a catastrophic event. In the NASA world, that means complete failure of a mission (rocket blows up, or total failure of a spacecraft to power up once on orbit - they call these "anomalies" in our field), or (even worse) loss of life.
In this case, I'd say an active starting athlete in a contact sport probably is in the 2X4 range. Not a super high likelihood, and the injury may not be a catastrophic level where someone could not report.
But, I'm not you, and your risk assessment might be different. My kid ran x-country/track as a distance runner, so the risk assessment for him would probably have been a 1X3