After being marked, move away from Quinn so she can't take advantage of it.
Keep tabs on Quinn's position. Behind Enemy Lines can enable Valor to cross the map very quickly and attack you by surprise.
When Quinn is using Behind Enemy Lines, damaging her removes her Move Speed bonus temporarily.
The stat comparisons shown on this page show some vital Senna against Quinn counter stats that can help you distinguish the differences and similarities between these two champs. Senna’s KDA ratio ([kills + assists] / deaths) of NaN is better than Quinn’s ratio of NaN, showing that Senna may be more central to her team's team fighting effectiveness than Quinn. This observation is in large part caused by the differences in assists.
Senna often has a slightly smaller longest killing spree than her matchup does. Commonly, she receives less damage than Quinn. This is usually reflective of different amounts of tankyness, yet it can also illustrate that the one champ has less mobility and thus is unable to escape further damage when engaged or poked.
Both League champions are great champions. Both champs have their strengths, weaknesses, and counters. In League's current meta, Senna usually fairs equally well when playing against Quinn, with a 50.2% win rate. Thus, Senna makes an ok counter to Quinn.
While Senna does have a higher winrate than Quinn, when they face off with one another, Senna also has a greater learning curve that makes her a more time consuming champ to pick up and master. You should be careful when picking Senna into Quinnas her relative depth means that you may not be able to reach her full potential without a lot of practice beforehand.
Moreover, Senna also has a good amount of utility and CC, a similar amount to Quinn. This makes her just as valuable during team fights, especially when trying to counter champions with a ton of burst damage.
While there is not a single best champion overall in League of Legends, in Senna vs Quinn matchups, Senna is the better champion with a similar win rate, more champion depth, and a similar amount of utility to help out your allied champions during teamfights.
Senna is a decent counter for Quinn. Focus your gameplay on increasing your CS and taking out objectives. If you do that, you should be able to stand on your own as Senna against Quinn.
To truly master Senna in order to counter Quinn during both the early game and mid / late game phases of League of Legends, you should keep reading to learn a few extra tips and tricks for this matchup. If you listen to the build and suggestions presented above, you will increase your win rate significantly and be that much closer to League of Legends pro players.
Senna often picks up less CS relative to Quinn. Champs who typically don't earn many minion kills typically don't have to have much CS to be effective, such as supports. These kinds of champions are able to scale well off of their abilities and first items alone. Yet, champions with a lot of CS, such as hyper-carries, usually need many items to be effective. In either situation, try to exceed the numbers displayed here to do well.
The top items to have in your Senna versus Quinn build consist of Youmuu's Ghostblade, Umbral Glaive, and The Collector. When Senna included at least these three pieces in her build, she did significantly better countering Quinn than with most other commonly used counter builds. In fact, Senna had an average win rate of 50.2% when playing against Quinn with this build.
To have the best chance of coming out on top against Quinn as Senna, you should use the Fleet Footwork, Presence of Mind, Legend: Alacrity, Cut Down, Approach Velocity, and Biscuit Delivery runes from the Precision and Inspiration rune sets. Of all the rune builds that we analyzed for Senna vs Quinn fights, this composite of runes resulted in the highest win rate. Moreover, these runes provided a 50.2% winrate overall.
If you would like to view Senna versus Quinn tips and matchup stats and build suggestions for a a distinct skill level, feel free to choose one from the selection menu provided above. If viewing for the first time, the statistics and build suggestions displayed are computed using every round with data with both champs.