When it rains, as the golden saying goes, it pours. 

As far as Australia's fortunes with the DRS review system are concerned, this Ashes series is increasingly becoming to resemble a torrential downpour.

The tourists' form has been nothing to write home about for the thousands of supporters that have made the trip over to England thanks, in so small part, to a systematic and abject failure to utilise the DRS system proficiently.

Shane Watson and Chris Rogers' poor record at reviewing decisions in the first two Tests has been well documented, bringing many Aussies supporters to wish the Queenslander reviewed with the same security with whom he sticks his left leg out - although an altogether different outcome would be the preferred option.

However, tentative as Australia's reviews have been, Michael Clarke and his troops have plenty of reasons to feel hard done by, for luck has completely deserted them throughout the series, but they should point the blame at the third umpire's door, rather than at the DRS'.

Usman Khawaja was the latest victim to fall to some poor umpiring as he was incorrectly given out off Swann, despite Hot Spot failing to support the original decision, while TV replays showed clear daylight between bat and ball.

Khawaja wasn't the first to suffer from a terrible call either, as the umpires' form throughout the series has mirrored the Aussie batsmen's display in terms of sheer ineptitude but, rather unjustifiably, their decisions have put the DRS under the spotlight.

Chris Rogers and Ashton Agar were incorrectly given out at Lord's but while the opener's decision not to review the call was influenced by Watson's earlier and frivolous appeal, Agar's situation was entirely different.

After England's reviewed the original decision, according to which Agar was judged not to have edged the ball, Tony Hill overturned the verdict, despite Hot Spot showing no clear sign of an edge and sent the young Australian walking, despite lacking sufficient evidence to overturn the decision.

In both cases, as well as in Khawaja's, DRS did his job, the third umpire, however, did not. Despite India's protestations that the system does not reach the required standard of reliability, DRS has proven to be a largely successful and helpful resources for players and umpires alike.

Unfortunately, technology can only offer a clearer picture upon which the umpires can base their decisions, rather than making a decision on their behalf. The human component will continue - perhaps rightly - to influence the game and blaming technology is not going to help.

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