Why do players smear black under their eyes?
Black eye smear reduces the blinding sunlight when looking up towards the sun, when catching/hitting the ball
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Why do players smear black under their eyes?
### Input: 
### Response: Black eye smear reduces the blinding sunlight when looking up towards the sun, when catching/hitting the ball