@sn0wwarrior Thank you for giving me advice and thanks for thumbs up!
btw this guide focuses more on tankyness than just damage and I feel extra tankiness = more time for you and your team to do damage. I personally don't like getting pure damage on Olaf but he's very flexible in build order as long as you get some tankyness

good looking guide

just for comparison sake i do my masteries 20/1/9 (1 in defense for improved smite and 9 in utility to get me longer buff times). also I like you item build overall though i would recommend more straight ad for him due to the better ad scaling on Undertow now and just for better damage out put in general. (basically im would typically not take Wit's End but instead take something like Black Cleaver or Infinity Edge. just some thoughts but i do really like the concept of this guide and you made very nice and easy to read so good job.

Doran's blade is much more powerful in my opinion early, but it can be skipped if you prefer to get wriggle's faster

My items at the end are zerkers, frozen mallet, atma's, wit's end, (situational item),(situational item). I don't always get all the items at the top

+ 1

lemme ask a few questions:

why do you have 6 final items not including boots? unless you stack move speed items? always take boots. always.

what do dorans blades do for you that wriggles doesn't. wriggles is the best ad jungle item by far for any jungler. it makes extremely fast clear, giving mire Hank time! yay!

the 30 hp should bot be neglected, in fact it is one of the best parts about the defensive tree! get it!

you mat want to think about putting 9 points from offense into utility for extended red buff, and for early game clearing, extended blue buff. it is very important to secure a strong early game.

hope I helped!

good luck!