Maria, from answers a question from Dennis, asking if you are at a disadvantage if you do not take divots when hitting your irons. Maria explains that most people will tell you that you are at a disadvantage, however, there are some very successful golfers that are pickers or sweepers who do not take much of a divot.
Taking a divot ensures you are hitting down on the ball, which offers 3 advantages. 1) you can get more backspin 2) the club is accelerating as long as it is descending 3) hitting down on the ball compresses it which leads to more distance.
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