How to beat the streaker? (8)

I believe the answer is:

outstrip

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'beat the streaker?' is the definition.
'outstrip' can be an answer for 'beat' (outstripping is a kind of beating). I'm unsure of the 'the streaker?' bit.

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for outstrip that I've seen before include "Move faster than (someone else)" , "Surpass, overtake" , "Exceed, overtake" , "Move faster than and overtake" , "Go faster or do better than" .)

I've seen this clue in The Guardian, The Telegraph and The Globe and Mail.

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