David,
I just texted one of the players I represent to ask him. His answer, as you might expect is "it depends".
- Definitely doesn't use all 14 each day. But guesses he probably uses all 14 over the course of 4 day tourney.
- 4-5-6 get hit the least, but how often depends on par 3 setups from week to week
- Definitely doesn't average 12 drivers a round
- If he was allowed unlimited clubs, he guesses he'd carry about 16, adding a 5th wedge and using both a hybrid and 5w
Hope this helps.
There is no official Tour data broken down by club, because no way of knowing what each payer used each shot. Only reason announcers know what players in lead are using is because caddies are signaling to McCord or Feherty or whoever is walking with them.
Also, keep in mind that their are huge differences in loft, lie, length etc from pro to pro's 8 irons, for instance. Astonishing amount of tinkering week to week. Often, I think, because they are bored on the range on Tuesday mornings and they have unlimited access to equipment vans. So when DJ says he didn't hit an approach to a par 4 with a club longer than a 7 iron, his 7 irons could be a LOT different length, loft etc than what we think of for a 7 iron.
Michael