Lukaku hasn't been the same player as he was last season, whatever the reason is anyone's guess....
As for the others, I don't think Barry & Distin are not trying I just think time has caught up with them.....similarly with pienaar who can't stay clear of injuries (again probably an age thing)...
Injuries to McCarthy & Stones have made things difficult too...
That's 6 key players right there.....
Mirallas has been out a few times, so has jageilka & Coleman....barkley missed nearly 2 months....
If you compare that with other clubs, we really have had little luck this season, and now confidence is at a very low point....
And we've not had much luck with refs either....man city, stoke & Newcastle all should have clear red cards against us...
I'm not happy with some of Martinez decisions lately, too many players being played out of position for me....but I wouldn't be rushing to sack him, be careful what you wish for because there isn't a whole lot of good managers out there who would be available to us....
Its become a Cup season for us now, lets see how Martinez does in the Europa & FA cups before we judge the season...