Compassion and Competition: Would you let your rival win?

Since I have never been in the situation to even think about it myself, I ask you this question.
Say, you are a star in a certain sport, and you have won dozens of national and international trophies/cups (plus a very nice amount of prize money).
Another player has been in the top 20 for years too, but has never won a tournament (therefore he/she earns just enough money to get on) the furthest he/she has come was some semi-finals and one final, which he/she lost.
Now you are both in the final.
Would you as always go for the trophy?
Or would you feel for the guy/girl and let him/her in a non-obvious manner win it this one time?