Revealed: Sunderland’s catalogue of errors that handed Coventry City victory - as key lessons learned

Here’s a look at some of the key lessons Phil Parkinson can take:

Sunderland cannot afford to make more errors

Matt Godden’s early strike was one to forget for Sunderland.

Their backline, as of late, have been fairly solid - but a cacophony of errors led to a goal which ultimately proved decisive.

In the image below, you will see how in circle one both Alim Ozturk and Tom Flanagan flock to Jamie Allen, paying no attention to the fact Godden is lurking behind.

Denver Hume, in circle two, is then forced to tuck in to cover for the wayward Flanagan, but his reaction is slow.

That forces Jordan Willis, in circle three, into a lunge in an effort to stop the shot. Had he stood his ground, and with cover from Hume, he may have found a way to block Godden’s effort.

There were too many errors at the other end, too, as Sunderland spurned a number of fine opportunities from set-pieces.

These are errors which Sunderland can ill afford at this crucial stage of the season.

Phil Parkinson has some big decisions to make for Gillingham

The clamour for change from the fanbase has risen once again - with two lacklustre showings prompting debate over whether personnel changes are needed.

Flanagan, Hume and Charlie Wyke all came in for criticism from supporters after the game and, with Declan John, Joel Lynch and Kyle Lafferty waiting in the wings, there will naturally always be an element of thought as to whether the grass could be greener.

Parkinson has stuck to his guns as of late, but could he be tempted to switch things up next weekend?

Will Grigg still has a future at Sunderland

The striker’s inclusion on the bench was something of a surprise, but only served to emphasise that his Sunderland career is far from dead.

Parkinson has repeatedly insisted that Grigg has a role to play and, while he was an unused substitute in the Midlands, chances may come his way in the coming weeks.

He could yet prove a key man in the promotion push.