Wigan remain bottom of the Premier League after missing numerous chances as they were held by West Brom.
Franco di Santo volleyed over and wide before Albion keeper Ben Foster tipped a third effort from the striker over.
Emmerson Boyce then stooped to head one of several teasing Jean Beausejour crosses onto the woodwork while James McCarthy hit the bar before half-time.
James McArthur tapped Wigan in front from a couple of yards after the break but Paul Scharner headed Albion level.
Wigan deserved to win - Martinez
A win would have taken Wigan out of the relegation zone but their wastefulness in front of goal proved costly.
The Latics have struggled to score at the DW Stadium all season, netting 12 times in 15 home games, but the early signs that they would significantly add to that tally looked promising.
Chilean Beausejour provided the main attacking threat down the Wigan left and he set up chance after chance with a series of sweetly hit crosses that his team-mates were unable to convert.
Di Santo volleyed over from an acute angle inside the opening 30 seconds before squandering the first of Beausejour's centres moments later when he sliced another volley wide.
Argentine striker Di Santo then saw Foster tip his fiercely hit 15-yard effort over the bar and from Beausejour's resultant corner Gary Caldwell shinned an effort from 10 yards wide.
WIGAN'S HOME FORM
The visitors, who ventured north with almost 5,000 supporters in tow, struggled to get a foothold in the game and they were indebted to the woodwork twice for keeping the scoreline level.
First Boyce was unable to keep his header down after timing his back-post run to perfection to meet Beausejour's cross into the six-yard box, then McCarthy rattled the bar with a 20-yard drive.
But Wigan's endeavour was rewarded soon after the break when Victor Moses showed tenacity to force his way to the byline and when his fiercely hit cross was not cleared by Billy Jones, McArthur had the simplest of tap-ins.
West Brom 'grit' cheers Hodgson
The goal sparked the visitors into life and Jerome Thomas fired an effort wide as they started to show some glimpses of the form that has brought them six away wins this season.
And they levelled with their first effort on target, midfielder Scharner stooping to nod in Chris Brunt's deep corner - his muted celebration showing respect for his former club's plight.
An ugly melee, sparked by Youssouf Mulumbu's unnecessary shove in the back on McArthur, threatened to spoil a largely entertaining game.
Several players joined in and the Albion midfielder was booked for his reaction to McArthur's challenge, while Thomas and Boyce joined him in referee Michael Oliver's notebook.
Wigan had their chances to win the match but Mohamed Diame dragged an effort hopelessly wide and into the midriff of Di Santo, before substitute Albert Crusat's dangerous cross was deflected onto his own post by Gareth McAuley in injury time.
Full Time The game is over, as the referee blows his whistle.
James McArthur takes a shot. Save by Ben Foster.
Outswinging corner taken by Jean Beausejour from the left by-line, Gareth McAuley manages to make a clearance.
Albert Crusat decides to take a short corner.
The ball is sent over by Albert Crusat, Ben Foster makes a save.
Mohamed Diame takes a shot. Ben Foster makes a save.
Mohamed Diame takes a shot.
Substitution Albert Crusat joins the action as a substitute, replacing Maynor Figueroa.
The ball is delivered by Jean Beausejour, Headed effort from deep inside the penalty area by Victor Moses misses to the right of the target.
Callum McManaman has an effort at goal from outside the area which goes wide right of the goal.
Corner taken by Jean Beausejour from the right by-line.
Gary Caldwell restarts play with the free kick.
Substitution Graham Dorrans comes on in place of Jerome Thomas.
Paul Scharner gives away a free kick for an unfair challenge on Mohamed Diame.
Franco Di Santo is caught offside. Liam Ridgewell takes the free kick.
Free kick taken by Ben Foster.
Booking Callum McManaman goes into the referee's book.
Paul Scharner fouled by Callum McManaman, the ref awards a free kick.
Effort from the edge of the area by Keith Andrews goes wide of the right-hand post.
Inswinging corner taken left-footed by Jean Beausejour, clearance by Gareth McAuley.
Franco Di Santo takes a shot. Save made by Ben Foster.
The ball is sent over by Jean Beausejour, clearance made by Gareth McAuley.
Substitution Mohamed Diame is brought on as a substitute for Shaun Maloney.
Substitution (Wigan) makes a substitution, with Callum McManaman coming on for James McCarthy.
Substitution Keith Andrews is brought on as a substitute for Youssouf Mulumbu.
Outswinging corner taken from the right by-line by Shaun Maloney, Gareth McAuley manages to make a clearance.
Emmerson Boyce takes a shot. Save by Ben Foster.
Corner from left by-line taken by Jean Beausejour.
Shane Long is caught offside. Ali Al Habsi restarts play with the free kick.
Direct free kick taken by Liam Ridgewell.
Booking Emmerson Boyce receives a caution.
Booking Jerome Thomas is given a yellow card.
Booking Youssouf Mulumbu shown a yellow card.
James McArthur concedes a free kick for a foul on Youssouf Mulumbu.
Chris Brunt has an effort at goal from outside the penalty box which goes wide left of the goal.
Chris Brunt provided the assist for the goal.
64:43 Goal scored
Goal! - Paul Scharner - Wigan 1 - 1 West Brom Paul Scharner finds the net with a headed goal from inside the six-yard box. Wigan 1-1 West Brom.
Chris Brunt takes a inswinging corner from the right by-line to the near post,
Corner taken left-footed by Chris Brunt from the right by-line to the near post, clearance by Franco Di Santo.
Liam Ridgewell fouled by Gary Caldwell, the ref awards a free kick. Free kick taken by Ben Foster.
Inswinging corner taken from the right by-line by Jean Beausejour.
Direct free kick taken by Maynor Figueroa.
Booking Chris Brunt is cautioned.
Foul by Chris Brunt on Franco Di Santo, free kick awarded.
Free kick crossed left-footed by Jean Beausejour.
Booking Caution for Paul Scharner.
Paul Scharner challenges Maynor Figueroa unfairly and gives away a free kick.
Jerome Thomas has an effort at goal from the edge of the box that misses to the right of the target.
The assist for the goal came from Victor Moses.
53:41 Goal scored
Goal! - James McArthur - Wigan 1 - 0 West Brom A goal is scored by James McArthur from close range to the bottom right corner of the goal. Wigan 1-0 West Brom.
The ball is crossed by Shaun Maloney, Ben Foster makes a save.
Jean Beausejour decides to take the corner short.
Paul Scharner concedes a free kick for a foul on Jean Beausejour. James McArthur takes the free kick.
Shaun Maloney takes a shot. Save by Ben Foster.
Nicky Shorey handles the ball and concedes a free kick. Ali Al Habsi takes the free kick.
Franco Di Santo fouled by Gareth McAuley, the ref awards a free kick. Maynor Figueroa produces a strike on goal direct from the free kick.
The game restarts for the second half.
45:00 +1:18 Half time
Half Time The ref blows to end the first period.
Centre by Jean Beausejour.
The ball is crossed by Jean Beausejour.
Corner taken right-footed by Shaun Maloney, Close range header by Franco Di Santo goes over the crossbar.
The referee blows for offside. Free kick taken by Gary Caldwell.
Outswinging corner taken left-footed by Jean Beausejour from the left by-line, clearance made by Liam Ridgewell.
James McCarthy takes a shot. Save made by Ben Foster.
Outswinging corner taken right-footed by Shaun Maloney from the right by-line to the near post, Liam Ridgewell manages to make a clearance.
Franco Di Santo takes a shot. Gareth McAuley gets a block in.
Antolin Alcaraz challenges Jerome Thomas unfairly and gives away a free kick. James Morrison crosses the ball, Gareth McAuley has a header from deep inside the six-yard box and clears the crossbar.
Paul Scharner concedes a free kick for a foul on James McCarthy. Direct free kick taken by Gary Caldwell.
The assistant referee signals for offside against Jerome Thomas. Ali Al Habsi restarts play with the free kick.
James Morrison takes a inswinging corner from the left by-line played to the near post.
Foul by Franco Di Santo on Nicky Shorey, free kick awarded. Ben Foster takes the free kick.
Free kick awarded for an unfair challenge on Billy Jones by Franco Di Santo. Free kick taken by Ben Foster.
Maynor Figueroa challenges Shane Long unfairly and gives away a free kick. A cross is delivered by Chris Brunt, Headed effort on goal by Gareth McAuley from inside the penalty box misses to the right of the target.
The offside flag is raised against Shane Long. Gary Caldwell restarts play with the free kick.
Shane Long gives away a free kick for an unfair challenge on James McCarthy. Gary Caldwell takes the direct free kick.
Corner from left by-line taken by Shaun Maloney.
Emmerson Boyce takes a shot.
Free kick awarded for an unfair challenge on Jean Beausejour by Jerome Thomas. Maynor Figueroa takes the free kick.
The referee blows for offside. Ben Foster takes the free kick.
Maynor Figueroa takes a shot.
Effort from the edge of the box by Jerome Thomas goes wide of the left-hand upright.
Corner taken left-footed by Chris Brunt, save by Ali Al Habsi.
James Morrison takes a shot. Blocked by James McArthur.
Handball decision goes against Gareth McAuley. Gary Caldwell restarts play with the free kick.
Inswinging corner taken by Chris Brunt, clearance made by Emmerson Boyce.
Effort from the edge of the penalty box by Emmerson Boyce goes wide of the right-hand upright.
The offside flag is raised against Shane Long. Free kick taken by James McCarthy.
Victor Moses fouled by Chris Brunt, the ref awards a free kick. Emmerson Boyce restarts play with the free kick.
Corner taken left-footed by Jean Beausejour from the left by-line, Close range effort by Gary Caldwell misses to the right of the goal.
Franco Di Santo takes a shot. Ben Foster makes a save.
Jean Beausejour produces a cross, Effort from deep inside the area by Franco Di Santo misses to the right of the goal.
Jerome Thomas fouled by Jean Beausejour, the ref awards a free kick. Free kick crossed left-footed by Chris Brunt from right wing.
Franco Di Santo produces a left-footed shot from inside the area that goes over the bar.
Unfair challenge on James McCarthy by James Morrison results in a free kick. Gary Caldwell takes the free kick.
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