Try harassing Tryndamere early so he can't kill minions and heal with Bloodlust.
Most of Tryndamere's damage is physical. If he's getting too strong, consider buying a Thornmail.
Remember, Tryndamere can only slow you if you are facing away from him.
The stat comparisons shown here feature several strategic Senna versus Tryndamere matchup statistics that can help you grasp the differences between this set of champs. For instance, Senna’s KDA ratio ([kills + assists] / deaths) of NaN is better than Tryndamere’s KDA ratio of NaN, showing that Senna may be more central to her team's team fighting potential than Tryndamere. This observation is largely fueled by the differences in assists.
Senna normally has a slightly smaller longest kill spree than her enemy does. On average, she receives less damage than Tryndamere. This often reflects different amounts of tankyness, yet it can also show that the champ with more health has less agility and thus is unable to escape additional damage when engaged or poked.
Both League champions are great. Both have their strengths, weaknesses, and counters. In League's current meta, Senna usually fairs equally well when facing off against Tryndamere, with a 50.3% win rate. Therefore, Senna makes an ok counter for Tryndamere.
While Senna does have a higher winrate than Tryndamere, when facing one another, Senna also has a greater level of difficulty that makes her a more complex champ to pick up and master. You still need to be cautious when picking Senna into Tryndamereas her relative depth means you may not be able to unleash her full potential without a lot of practice beforehand.
Additionally, Senna has a good amount of CC and other utility, a similar amount to Tryndamere. This often makes her just as valuable during teamfights, especially when trying to counter champions with a ton of burst damage.
While there is not a single best champion for every situation in League of Legends, in Senna vs Tryndamere matchups, Senna is the better champion with a similar win rate, more champion depth, and a similar amount of utility to help out your teammates during team fights.
Senna is a decent counter to Tryndamere. Make sure you focus your actions on keeping up your gold and cs and destroying objectives. If you are able to do that, you should do very well as Senna against Tryndamere.
To truly master Senna in order to counter Tryndamere during both the laning and mid / late game phases of League of Legends, you should keep reading to learn a few extra tricks and insights into this matchup. If you mind the build and tips displayed above, you will increase your win rate by a lot and be that much closer to League of Legends pro players.
Senna typically gets less CS compared to Tryndamere. Champs who typically don't earn many minion kills often don't need much CS to be effective, such as supports. These kinds of champions are capable of scaling properly off of their abilities and first items alone. Yet, champions with a lot of CS, such as hyper-carries, typically need several high cost items to be effective. In either situation, try to do better than the numbers reported here to do well.
The best items to prioritize in your Senna versus Tryndamere build include Rapid Firecannon, Youmuu's Ghostblade, and Edge of Night. When Senna used at least these three pieces in her build, she performed much better against Tryndamere than with many other common counter builds. In fact, Senna had an average winrate of 50.3% when countering Tryndamere with this build.
To have the greatest chance of coming out on top against Tryndamere as Senna, you should use the Fleet Footwork, Presence of Mind, Legend: Alacrity, Cut Down, Bone Plating, and Revitalize runes from the Precision and Resolve rune sets. Out of all the rune builds players picked for Senna vs Tryndamere face-offs, this sequence of runes yielded the highest win rate. Notably, these runes gave a 50.3% winrate overall.
By default, tips, stats, and builds on how to beat Tryndamere as Senna are shown for all skill levels combined. If you would like to narrow the stats and builds to a particular division, you may use the selection menu located above.