Tees perhaps collected by golfer I've requested (5)

I believe the answer is:

river

I'm a little stuck... Click here to teach me more about this clue!

'tees perhaps collected by golfer i've requested' is the definition.
I can't judge whether this definition defines the answer.

'collected by golfer i've requested' is the wordplay.
'collected by' says the answer is hidden in the clue.
'RIVER' is hidden within 'golfer ive requested'.

Can you help me to learn more?

(Other definitions for river that I've seen before include "Eg, the Rhine" , "Natural flow of water" , "Current" , "It flows" , "Such as the Nile or Amazon" .)

I've seen this clue in The Telegraph.

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