How to counter Taliyah
Let us take a look on how to beat Taliyah. We will look at champions who are strong against Taliyah and who are weak against Taliyah. Use win rate, gold difference and creep score difference at minute 10 to find the best 
Jungle champion who counters Taliyah. You can already win in champion select with the right counters for Taliyah. If you want to know how to counter Taliyah then you need to take into account the best picks vs Taliyah and the worst picks vs Taliyah. This Taliyah counter data is based on matches played by Pros on patch 14.12 and previous ones. It is important to see whether Pros counter picked Taliyah or whether they played as Taliyah.
Champions used by Pros to counter pick Taliyah
Looking at the matches from Pros (see table Pros counter picked Taliyah) we can see that they picked 
Viego most often to counter pick Taliyah. The matchup Viego vs Taliyah occured 106 times. Taliyah has 55 wins and 51 losses in this matchup. Learn how to counter pick Viego to get another perspective on the data.
Lane outcome for Taliyah
When looking at Taliyah counters you will notice that win rates alone are not conclusional. Therefore we provide an overview (see table Lane Outcome) where you can see the lane outcome of Pros who played Taliyah. The lane outcome of Taliyah consists of three outcomes: Win, Loss or Draw. Let's take a look of Taliyah lane and match outcome for specific matchups. Considering the lane outcome and the match outcome of a specific matchup, might enable you to find the right counter for Taliyah.
Conclusion
Analyze the available data and learn how to beat Taliyah. To master Taliyah take also a look on Taliyah builds and runes for Taliyah. Good luck, Summoner!