As a competitive athlete in martial arts, you can meet the same opponents that you have met before. For some, this is a challenge mentally, while for others it does not matter.And it will of course be a factor in how things went last time they fought. If you have won before, it may be a "greater loss" of an inability to repeat this. If there have been a loss their first meeting, however, one can feel that there is a "no lose" situation, and it may seem releasing on nerves and tension in the body. 

But nothing is like "hitting" old friends again!