Gavin Cowan knows all about pain – he had to endure the agony of an ankle injury earlier this season.
But what must be even more difficult to endure is the sight of his former team-mates at Nuneaton Town, who completed a 2-1 victory against the Blues at the Northolme on Tuesday, powering to the top of Blue Square Bet North.
The gap between the two teams according to Cowan, who is captain at the Northolme, is not huge.
Trinity have an assortment of talented players, a former Premier League manager in charge and a chairman with a long-term vision for the club. That should guarantee success.
And yet Gainsborough sit 14th with a comfortable mid-table finish the most likely outcome.
For a player as hungry for success as Cowan that simply won't do.
"We're letting ourselves down at key points in games and that simply won't do," said Cowan, whose Trinity side play the second of three consecutive home games against Solihull Moors tomorrow (3pm).
"I can't put my finger on why we haven't done better. Perhaps only Jose Mourinho or Arsene Wenger could answer that.
"I don't think we're doing anything different to Nuneaton – there's nobody there who is better than anything we've got.
"Maybe because they have won a few games on the trot they're doing things they might not usually try, and they're able to grind out results. That's what we need to do. But we destroyed them in the second half on Tuesday.
"It would give us that bit of confidence, that bit of belief."
Trinity will face a difficult challenge against a Solihull side who sit in sixth place and are unbeaten in their past five fixtures.
In their most recent match, Moors drew 2-2 at home against Droylsden, but had won three successive matches prior to that result, to leave them slightly adrift of the division's flying top five teams.
And Trinity will need their influential stopper to counter a threatening attack which have averaged 1.65 goals per games this season.
Thankfully Cowan is back to full fitness following the ankle injury which he admits caused him some problems when he first made his return to action.
"When I first came back from the injury I was struggling to find my feet a bit," said Cowan.
"When we won at Boston, though, I was better and ever since I've felt good and on my game. My ankle is strengthening up and I've felt a bit more up to scratch.
"But as a defender I'm never fully happy, especially as in the past few matches we've averaged conceding a goal a game. It's frustrating because we are losing that bit of concentration once every game and it's costing us. We have to cut that out."
Trinity have no new injury concerns following Tuesday's game. Striker Jefferson Louis, who had returned to the club following a loan spell at Darlington, has been released.