I've seen Tiger hit at least 20 tee shots off #10 over the years and I seem to remember him hitting 2 iron occasionally or 3 wood, depending on the wind. In recent years, almost always 3 wood.
Ironically, the first round tee shot off #10 in 1997 was one of the few I missed. I saw every shot of his front nine 40, went to get something to eat, and didn't catch up to him and Faldo until his chip-in on #12. Fortunately, I saw pretty much everything else he did that week.