How is 1 Corinthians 9:27 reconciled with the teaching that losing salvation is impossible?

This question is aimed at those Christians who believe that someone saved can't become "unsaved" later. At least in 1 Corinthians 9:27 apostle Paul says he is not sure whether he will be saved or not (AFAIK there are other verses like this, and of course other places where Paul expresses his hope he will be saved). Here it is: > 27 No, I beat my body and make it my slave so that after I have > preached to others, I myself will not be disqualified for the prize. (NIV–1984) Question is simple: how do those Christians interpret this? ---------- Related: - Can a Christian walk away from their salvation? - Do parts of Hebrews 3 and 4 imply that saved Christians can become unsaved? - [Once saved always saved. Is eternal security Biblical? \[closed\]][3] - How does 1 John 2:19 fit with the teaching that Christians can lose their salvation