DRS should rarely be used for LBWs in test cricket

 The elephant in the room about DRS with regard to LBWs is whether it is accurate.

I want to say it is not only inaccurate but comes up with scenarios that are IMPOSSIBLE.

Let us review three examples.

Lyon to Stokes at Headingley

Sorry no coverage!! Lyons releases the ball from about a yard wide from the return crease. This means it must spin a hellva a lot to hit the wicket. Only one problem it only spun from the bowlers footmarks on the last day. This is why Boycott said to Agnew after only 30 minutes of play England could win the test provided they had batsmen of test class. They could easily deal with spin from the bowlers footmarks. Spin from wicket to wicket is an entirely different proposition.

Thus DRS is asserting the IMPOSSIBLE.  Did it conflate the bowlers footmarks and the legstump?

Anderson to whom ever around the wicket

Unfortunately I have no coverage of this  however we only have to know when Anderson bowls around the wicket to righthanders his inswinger is swinging a lot and late. Since he swings it more than the width of the stumps then we know the umpire will only give the batsman out if the ball pitches outside the stumps. However Andersson has been denied wickets because the ball has allegedly pitched OUTSIDE the legstump. If this actually occurred the ball could not have hit the batsman's pads. It would have gone down the legside where the wicketkeeper would have had to dive to stop the ball going for wides. There is no way it would have hit the batsman's pads. In other words DRS has badly got it wrong. What it is saying is IMPOSSIBLE

DRS cannot even get where the ball pitched correct!

Maharaj in England

Alas no coverage again but in the series against England  last year DRS had Maharaj on the second day pitching the ball outside of the legstump and  finishing outside the offstump. Bear in mind on the second day the pitch is at its best for batsmen. Put it this way if he cannot spin in this much in India how could he do this in England when the pitch is at its best for batsman. yet again DRS is asserting the IMPOSSIBLE.

Why are we using DRS in LBW decisions when it has NO credibility? Why is it used in educating umpires?

Yes that is right it should not be used. Just remember a batsman who calls for a review of an umpires decision is totally contradicting the spirit of cricket.