Never since Shane Warne brought the dying art of leg spin to life in the mid-1990s, have wristspinners been in vogue as much as they were in 2017. For the first in their history of 933 ODIs, India fielded two specialist wristspinners together - Yuzvendra Chahal and Kuldeep Yadav. With more sides following England's blueprint of playing attacking cricket in the middle overs in ODI cricket, the wristspinners come in play by giving the sides timely breakthroughs between overs 11 and 40. The wristspinners averaged 28.04 and took a wicket every 35 balls making them comfortably the most reliable wicket-taking option in the middle overs. It's worth mentioning two of the three hat-tricks in ODIs this year have been by wristspinners (Wanidu Hasaranga & Kuldeep) - especially considering that no leg spinner had previously taken a hat-trick in ODIs.
Source : http://www.cricbuzz.com/cricket-news/99354/2017-a-year-in-review-another-routine-year-for-virat-kohli-rashid-khans-annus-mirabilis