Olaf can combine Berserker Rage, Vicious Strikes, and Ragnarok at low life to become deceptively strong.
The bonus healing granted by Vicious Strikes amplifies your Life Steal from all sources as well as heals from allies.
Rammus often stacks high Armor, leaving him especially vulnerable to caster damage while not in Defensive Ball Curl.
Pay particular attention to when his Defensive Ball Curl is off. Rammus has much lower stats than a normal tank when he's out of the stance.
The stat comparisons shown here underscore some valuable Olaf versus Rammus counter stats that can help us distinguish the differences and similarities between the pair. Olaf’s KDA ratio ([kills + assists] / deaths) of NaN is more than Rammus’s KDA ratio of NaN, demonstrating that Olaf may be more central to his team's team fighting capacity than Rammus..
Olaf normally has a slightly larger longest kill spree than his matchup does. On average, he receives a similar amount of damage to Rammus. This commonly reflects differing health capacities, but it can also hint that the champ with increased HP has less agility and thus is not able to flee from additional harm when poked or engaged.
Both League of Legends champs are great champions. Both have their pros and cons. In the game's current meta, Olaf usually loses when taking on Rammus, with a 46.2% win rate. Therefore, Olaf makes a poor counter for Rammus.
While Olaf does have a lower winrate than Rammus, when they face off with one another, Olaf also has a lower difficulty level that makes him a less complex character to pick up and master. You should expect to face a difficult match when picking Olaf into Rammus.
Furthermore, Olaf has almost no amount of utility and CC, a similar amount to Rammus. This often makes her just as valuable during teamfights, especially when trying to counter champions with a lot of burst damage.
While there isn't a single best champion for every situation in League of Legends, in Olaf vs Rammus matchups, Rammus is the better champion with a much lower win rate, less champion complexity, and a similar amount of utility to help out your team members during team fights.
Olaf is a bad counter for Rammus. You will do well by focussing your actions on increasing your CS and clearing objectives. If you are able to do that, you should do very well as Olaf against Rammus.
If you would like to learn all of the intricacies of Olaf to counter Rammus during both the laning and mid / late game phases of League of Legends, you should continue reading to gather a few extra tips and tricks for this matchup. If you listen to the build and suggestions shown here, you will grow your win rate by a lot and be that much closer to League of Legends pro players.
Olaf typically accumulates much more CS relative to Rammus. Champs who on average don't take much CS usualy don't need much CS to be valuable teammates, such as supports. These kinds of champions are capable of scaling properly off of their abilities and first items alone. Yet, champs with a lot of CS, such as hyper-carries, usually require a lot of items to be effective. In either case, try to surpass the numbers shown on this page to do well.
The ideal items to have in your Olaf versus Rammus build include Sterak's Gage, Experimental Hexplate, and Ravenous Hydra. When Olaf combined at least these three pieces in his build, he did a lot better vs Rammus than with many other commonly used item sets. In fact, Olaf boasted an average win rate of 46.2% when countering Rammus with this counter build.
To have the greatest probability of annihilating Rammus as Olaf, you should use the Conqueror, Triumph, Legend: Alacrity, Last Stand, Biscuit Delivery, and Approach Velocity runes from the Precision and Inspiration rune sets. Out of all the rune combinations players picked for Olaf vs Rammus fights, this composite of runes resulted in the best win rate. Notably, these runes provided a 46.2% winrate overall.
By default, tips, stats, and builds on how to beat Rammus as Olaf are shown for all ranked divisions combined. If you would like to scope the stats and builds to an individual skill level, you should use the selection menu earlier in the counter matchup guide.