Dundee United players until the second half to get going after making it eight games without a win following defeat against Motherwell.
The Tangerines are just five points ahead of second bottom Ross County who they face on Saturday in the Highlands and Mellon insists it’s time to roll their sleeves up.
United were 2-0 down at the break before they rallied in the second half and Ryan Edwards pulled a goal back but it was too little, too late.
Mellon said: “We had a chat at half-time and they went out in the second half and the thing that makes you more angry is that they found that extra 30 per cent and looked like a completely different team as if I’d made eleven subs. “We should start with that level of intensity.
Read more on dailyrecord.co.uk