The on-loan striker, who scored twice in the midweek Carling Cup win over Hereford, hit his first shot wastefully wide from close range after great work by David Perkins.
But he was unlucky with his second effort in the space of two minutes, blasting a fine 18-yard shot against the post.
The Owls had the better opportunities in a tight match before then, Morrison hitting the post and seeing the ball scrambled off the line and also hooking a shot wide from close range.
But Bond's goal gave Colchester confidence and they seemed set to take the points until Mellor intervened with seven minutes remaining.
Colchester United manager John Ward told BBC Essex: "In there I have the same feelings as last Saturday at Exeter, where we have been ahead and not come away with the win.
"But watching my team play, against one of the favourites to get back out of this division, I think I've been really, really pleased with a lot of things I've seen.
"We are on the right track, we just have to toughen it up and win."
Live text and stats
Saturday, 14 August 2010
Npower League One
16 Henderson (Vincent 80)
19 Mooney (Odejayi 87 yellow card)
22 Wordsworth yellow card
02 Spurr (Jones 82)
10 Coke yellow card
17 O'Connor (Potter 67)
21 Teale (Mellor 59)
Ref: PhillipsAtt: 6,011
Attempts on target
Attempts off target
94:31 The match has kicked off.
90:00+3:38 Darren Potter delivers the ball from the free kick right-footed from left wing, comfortable save by Mark Cousins.
90:00+3:38 Booking Kayode Odejayi receives a yellow card for unsporting behaviour.
90:00+3:32 Kayode Odejayi gives away a free kick for an unfair challenge on Daniel Jones.
90:00 The referee brings the game to a close.
88:44 Brian Wilson takes the inswinging corner, Marcus Tudgay manages to make a clearance.
88:03 Daniel Jones concedes a free kick for a foul on Ashley Vincent. Anthony Wordsworth crosses the ball from the free kick left-footed
from right wing.
86:48 Substitution Kayode Odejayi replaces David Mooney.
84:26 The assistant referee signals for offside against Ashley Vincent. Nicky Weaver takes the indirect free kick.
82:58 GOAL - Neil Mellor:Colchester 1 - 1 Sheff Wed Neil Mellor scores a goal from close range to the bottom left corner of the goal. Colchester 1-1 Sheff Wed.
81:40 Substitution Daniel Jones on for Tommy Spurr.
Correction - 80:29 Corner taken by Anthony Wordsworth, save by Nicky Weaver.
80:29 Inswinging corner taken left-footed by Anthony Wordsworth, comfortable save by Nicky Weaver.
79:05 Substitution Ian Henderson goes off and Ashley Vincent comes on.
77:28 Handball decision goes against Marc Tierney. Free kick crossed right-footed by Darren Potter.
75:29 Effort on goal by Ian Henderson from inside the area goes harmlessly over the bar.
74:23 Corner taken right-footed by Darren Potter from the left by-line, clearance made by Paul Reid.
73:56 Darren Purse takes the free kick.
73:56 Booking Booking for Anthony Wordsworth for unsporting behaviour.
73:16 Free kick awarded for a foul by Anthony Wordsworth on Darren Potter.
72:29 Unfair challenge on Neil Mellor by Paul Reid results in a free kick. Darren Potter takes the free kick.
69:12 Paul Reid restarts play with the free kick.
69:12 Booking Booking for Giles Coke.
68:42 Unfair challenge on Marc Tierney by Giles Coke results in a free kick.
68:06 Darren Potter takes the inswinging corner, David Perkins manages to make a clearance.
66:40 Substitution (Sheff Wed) makes a substitution, with Darren Potter coming on for James O'Connor.
63:34 Handball decision goes against David Mooney. Free kick taken by Nicky Weaver.
61:16 Marcus Tudgay takes a shot. Save made by Mark Cousins.
60:48 Free kick awarded for an unfair challenge on Clinton Morrison by Paul Reid. Direct free kick taken by Giles Coke.
59:39 Mark Beevers challenges David Mooney unfairly and gives away a free kick. Mark Cousins takes the direct free kick.
58:28 Substitution Neil Mellor joins the action as a substitute, replacing Gary Teale.
55:40 Effort from outside the penalty area by David Mooney hits the post. Inswinging corner taken left-footed by Ian Henderson from
the right by-line to the near post, Darren Purse makes a clearance. Inswinging corner taken left-footed by Ian Henderson,
clearance by Giles Coke.
54:50 Shot by David Mooney from deep inside the penalty area misses to the right of the target.
51:42 Chris Sedgwick has a headed effort from close in and clears the bar.
49:28 Assist on the goal came from Kemal Izzet.
49:28 GOAL - Andy Bond:Colchester 1 - 0 Sheff Wed Andy Bond finds the net with a goal from just outside the penalty box to the top right corner of the goal. Colchester 1-0
48:53 Outswinging corner taken from the right by-line by Gary Teale, clearance made by Kemal Izzet.
47:38 The official flags David Mooney offside. Darren Purse takes the indirect free kick.
47:13 David Perkins takes a shot. Save by Nicky Weaver.
45:48 Outswinging corner taken right-footed by Ian Henderson from the right by-line to the near post, clearance made by Chris Sedgwick.
45:01 The game restarts for the second half.
45:00 The match has reached half-time.
44:03 Shot from just outside the box by Kemal Izzet goes over the bar.
43:37 Unfair challenge on Kemal Izzet by Clinton Morrison results in a free kick. Free kick taken by Marc Tierney.
36:15 Shot by Clinton Morrison from deep inside the penalty area misses to the left of the target.
35:50 David Perkins challenges Marcus Tudgay unfairly and gives away a free kick. Darren Purse takes the free kick.
34:25 Free kick awarded for an unfair challenge on Kemal Izzet by Clinton Morrison. Free kick taken by Mark Cousins.
33:48 The referee blows for offside. Nicky Weaver restarts play with the free kick.
32:23 David Mooney is penalised for handball and concedes a free kick. Direct free kick taken by Nicky Weaver.
31:59 Ian Henderson fouled by Mark Beevers, the ref awards a free kick. Kemal Izzet takes the direct free kick.
30:44 Inswinging corner taken right-footed by Ian Henderson, clearance made by Giles Coke.
26:52 Kemal Izzet gives away a free kick for an unfair challenge on Clinton Morrison. Darren Purse takes the free kick.
19:00 Anthony Wordsworth concedes a free kick for a foul on Darren Purse. Darren Purse takes the free kick.
17:56 Marcus Tudgay is penalised for a handball. Mark Cousins restarts play with the free kick.
14:19 Outswinging corner taken right-footed by Gary Teale.
11:32 Foul by Anthony Wordsworth on Mark Beevers, free kick awarded. Darren Purse takes the free kick.
10:20 Ian Henderson produces a right-footed shot from outside the penalty box and misses wide left of the target.
8:53 David Mooney produces a drilled left-footed shot from 20 yards. Save by Nicky Weaver.
4:18 Corner from left by-line taken by Ian Henderson.
1:58 Gary Teale has a shot on goal from outside the box which misses left.
0:38 Tommy Spurr concedes a free kick for a foul on Ian Henderson. Strike on goal comes in from Anthony Wordsworth from the free
Live text and data provided by The Press Association.
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