But, after dominating the opening half and taking a 2-0 lead into the break, Blues almost threw it away as the home side piled on the pressure in the second period.
Blues played some good attacking football and should have taken a 3 or 4 goal lead into the second half but they let the home side get back into the game and if it hadn’t been for the woodwork late on the score might have been so very different.
Casswell went into the game making one enforced change with Michael Thomas coming into the centre of defence to replace the suspended Danny Smith whilst Peter Wright was preferred up front in place of Matt Haddrell.
In addition, Danny Shelley came in for Ross Davidson in midfield and Ricky Bridge replaced Matt Bell
at left back.
Leek pushed Lincoln back from the off and Tim Grice
scooped a shot over in the opening minute before running onto a long clearance only to fire wide less than a minute later.
In the 3rd minute though, Lincoln almost opened the scoring when a long clearance by the keeper found Jordan Hempenstall but his volley was superbly turned over by Daniel Lloyd-Weston.
However, Leek didn’t have to wait long to open the scoring when Tom Urwin cut inside to lay the ball back to Dan Shelley and he found the far bottom corner with a fine shot from 20 yards out.
Leek were well on top at this stage and thought they had netted a second on 14 minutes when Grice saw his angled shot cleared off the line before being cleared for a corner.
blasted home through a sea of legs but effort was ruled out by the assistant referee who determined that the flag-kick had drifted out and back into play.
Lincoln almost equalised on 19 minutes when a break-away released Hempenstall but Lloyd-Weston was alert to the danger and he bravely threw himself at the striker’s feet to block the shot.
Two minutes later Lloyd-Weston was called on again this time to deny Terry Fleming with another diving save at the foot of the upright.
Leek came close to extending their lead when Tim Sanders split the home defence with a quality ball forward for Grice who held off a defender to get a shot on target that forced a full length save from Phil McGann.
A minute later Blues carved out another chance when Sanders went on a good run down the right before crossing into the box but Karl Charlton got underneath it and the header cleared the crossbar.
In the 25th minute Leek increased their lead when Michael Thomas went on a probing run and then delivered a good ball forward for Grice who took one touch before blasting into the far bottom corner.
Three minutes later Shelley and Tom Urwin combined to set up Wright but he lifted his shot over the crossbar before Urwin was denied by McGann.
In the 31st minute Leek almost increased their lead when Charlton turned the ball in for Wright whose first shot was blocked and his follow-up effort thudded into the crossbar before being cleared.
Two minutes from the break Blues put another good move together involving Shelley, Urwin and Sanders but Sam Hall
scooped the ball over from a good position.
Lincoln looked a better side in the second half as Leek were forced onto the back foot with some defending to do to protect their 2-goal lead.
The home side won a free kick in the 51st minute but Sean Wright headed way over before Lloyd-Weston went down to deny Liam Bull following another free kick.
Lincoln piled on the pressure but Scott Coupland scuffed a shot wide before Grice went on a run down the right holding off two markers to get a cross into the six-yard box that was hacked clear.
The home side eventually pulled a goal back in the 64th minute when a long clearance found Hempenstall who crossed in for George Zuerner and he hit the back of the net off the inside of the far post.
Twice in the space of 2 minutes Lincoln could only find the side netting sensing that they could get back on level terms but the Leek defence stood firm until the 82nd minute when Coupland crashed his shot against the upright.
On the stroke of full time Blues conceded a free kick on the edge of the box and this time Coupland saw his shot cannon back off the crossbar.
Blues had to endure 3 minutes of added time and in the end they were relieved to hear the final whistle.
Lincoln: McGann, Fleming, Butler, Bull, McDaid (Garrick 45), Wright, Hone, Zurener, Hempenstall, Funnell, Coupland (King 74). Unused Subs: .
Leek: Lloyd-Weston, Sanders, Bridge, Thomas, Melling, Hall, Grice (Haddrell 67), Shelley, Wright (Stevenson 87), Charlton (Davidson 64), Urwin. Unused subs: Ruddock, Danylyk.
Yellow cards: Wright, Charlton
Star man: Ricky Bridge
Report: Mike Cope