Barnsley's three-game winning run came to an end with a 2-0 loss at Swansea City on Saturday.
The hosts took the lead in the second minute then substitute Victor Adeboyejo scored an own goal midway through the second half.
That meant the Reds slipped down one place to 13th in the table, five points off the play-offs and 13 clear of the bottom three.
It was a disappointing performance from the Reds on a very poor pitch, especially after an even first half when they were second best after the break.
Clarke Oduor replaced the suspended Callum Styles at left wing-back in the only change from the side that beat Preston North End on Tuesday. There were only eight substitutes on the bench with nine allowed.
The Reds conceded after only 75 seconds as, after a free-kick was cleared, a cross was flicked on by Ben Cabango to the unmarked Jamal Lowe who had the whole goal to aim at six yards out and beat Walton. It was the second time in as many games the Reds had conceded in the second minute and the third time in a row they went behind within the first five.
Barnsley responded well and their captain Alex Mowatt saw a 25-yard free-kick pushed away by goalkeeper Freddie Woodman.
The Reds then had a succession of corners, from Oduor and Matty James, and long throws, by Dominik Frieser, but could not carve out a clear-cut opportunity.
There was a nervous moment for the Reds when Walton charged out of his box and fouled Yan Dhanda so received a yellow card as two defenders were covering. Matt Grimes sent the resulting 30-yard free-kick straight at Walton.
The goalkeeper again raced out of his box seven minutes into the second half but perfectly timed his slide tackle on Lowe after a Grimes pass following a poor Chaplin header.
Barnsley made a triple change on 56 minutes with Woodrow, Chaplin and Frieser replaced by Luke Thomas, Adeboyejo and George Miller.
Swansea doubled their lead midway through the second half when Grimes' corner from the right was flicked into his own net by Adeboyejo at his front post.
Adeboyejo could have made amends 13 minutes later when he curled over the ball on the left of the box 15 yards out after Andre Ayew was robbed on the edge of his area by a combination of Miller and Oduor.
At the other end, Jake Bidwell volleyed over a difficult chance from a Jay Fulton cross with six minutes to play.
Swansea (3-4-1-2): Woodman; Cabango, Bennett, Guehi; Roberts, Fulton, Grimes, Bidwell; Dhanda; Ayew, Lowe. Unused: Benda, Latibeaudiere, Manning, Smith, Palmer, Routledge, Cooper, Cullen, Gyokeres. Yellow cards: Roberts. Goals: Lowe 2, Adeboyejo OG 66.
Barnsley (3-4-3): Walton; Sollbauer, Helik, Andersen; Brittain, Mowatt (Kane 82mins), James (Palmer 71m), Oduor; Frieser (Miller 56mins), Woodrow (Adeboyejo 56), Chaplin (Thomas 56mins). Unused: Collins, Moon, Schmidt. Yellow cards: Walton.
  • 3:00pm
    Jamal Lowe scores after 74 seconds
  • 3:02pm
    Second time in as many games they have gone behind in second minute, third time in a row conceded in the first five minutes. They have been excellent at comebacks recently though
  • 3:02pm
    The goal was a cross from the right, flicked on by a Swansea header and Lowe was totally unmarked about six yards out then fired past Walton
  • 3:06pm
    A reasonable response by the Reds, who have had a fair bit of the ball since conceding without creating a chance
  • 3:08pm
    8 A bit of a scare for Swansea as goalkeeper Freddie Woodman's kick if blocked by Woodrow but it goes behind
  • 3:11pm
    12 Decent break by Barnsley and it nearly openers up for them. Frieser tackled on the edge of the box then Mowatt tripped for a free-kick
  • 3:12pm
    13 Barnsley's first shot is a 25 -yard free=kick by Mowatt which is going towards the top left corner but it is pushed away by Woodman
  • 3:16pm
    Barnsley building a bit of pressure here, getting their front three on the ball more often in the Swansea half but they have only threatened through that Mowatt free-kick
  • 3:16pm
    18 Dominik Frieser with a series of long throws. Mads Andersen wins a header but a free-kick is given against him for a push on Andre Ayew
  • 3:18pm
    20 Another Frieser throw is flicked on by Helik and it leads to a scramble in the box in which neither Woodrow or Mowatt can get shots away
  • 3:21pm
    Halfway through the first half. A very familiar pattern as Barnsley concede a sloppy opening goal then start having the better of the game – but they are yet to create a real chance except Alex Mowatt saw a long-range free-kick saved. 1-0 Swansea.
  • 3:23pm
    23 Yet another Frieser throw, this time from the right. Cleared but Woodrow volleys back into the box and there are half hearted appeals for a foul on Helik
  • 3:23pm
    24 Corner to Barnsley after Bidwell slices a cross behind
  • 3:24pm
    25 Oduor's right-wing corner is almost met at the front post by Sollbauer but Fulton puts it behind for another corner
  • 3:25pm
    26 Another corner touched by Oduor to James whose close cross is controlled by Andersen but a defender clears for another corner which is cleared
  • 3:28pm
    Jack Walton is booked for coming out of his box and taking out Dhanda. The home players wanted a sending off but both Sollbauer and Andersen were covering
  • 3:29pm
    30 Grimes' 30-yard free-kick is straight at Walton
  • 3:31pm
    32 Decent move for the Reds sees Brittain win a corner on the right
  • 3:31pm
    33 James' corner on the right is headed behind for a corner on the left
  • 3:33pm
    34 Oduor's corner from the left is played low to Chaplin who wants a handball penalty after his first touch is blocked by a defender then he swaps passes with Oduor but his cross is caught by the goalkeeper
  • 3:35pm
    Sollbauer is struggling against the pacy Jamal Lowe who beats him then tries to pass the ball into the box but Andersen cuts it out well
  • 3:39pm
    Approaching the final five minutes of an even first half. Barnsley have recovered well from another early goal against but are yet to create a big chance for a leveller
  • 3:41pm
    Woodrow and Marc Guehi arguing with each other and the referee steps in to tell them to calm down
  • 3:44pm
    45 Corner for Swansea on the left. Roberts takes and Andersen heads out then James clears the follow up
  • 3:44pm
    One added minute
  • 3:45pm
    HALF-TIME: Swansea 1, Barnsley 0. The Reds trail to a second minute goal. They have had plenty of long throws and corners since then but the closest they came to a goal was Alex Mowatt's long-range free-kick which was easily saved
  • 4:01pm
  • 4:02pm
    46 Frieser's long throw is cleared as is James' follow-up cross
  • 4:04pm
    49 Swansea free-kick on the right, taken by Connor Roberts. It is headed out by Woodrow
  • 4:07pm
    51 Chaplin shoots from 25 yards. It is blocked behind for a corner
  • 4:07pm
    52 Oduor's corner on the right is headed out then Frieser does well to snuff out a counter attack
  • 4:08pm
    52 Real bravery by Jack Walton - Lowe is played clear through by Grimes after a bad Chaplin header and the goalkeeper – on a yellow card – rushes out and makes a perfect slide tackle
  • 4:12pm
    56 Lowe gets in down the left of the box and fires across the face of goal
  • 4:12pm
    56 Triple change for the Reds as Thomas, Miller and Adeboyejo come on for Chaplin, Frieser and Woodrow. So the whole front three changed with more than half an hour to go
  • 4:15pm
    60 Roberts' corner on the right easily cleared
  • 4:19pm
    Swansea have probably edged this second half so far but there have been no real chances of note
  • 4:21pm
    66 Swansea win a corner on the right
  • 4:21pm
    66 Grimes' corner is headed into his own net by Victor Adeboyejo
  • 4:23pm
    Oh dear. He goes from match-winner on Tuesday to own goal scorer this time. He tried to head the corner away at his near post but it went in
  • 4:26pm
    Romal Palmer on for Matty James
  • 4:31pm
    It's absolutely pouring with rain here.
  • 4:34pm
    Approaching the final ten minutes here. Barnsley have not created anything in the second half. If they score soon, they will make it nervous for the hosts
  • 4:35pm
    79 Barnsley's first chance of the second half sees Adeboyejo shoot over on the left of the box about 15 yards out. That came after Ayew was robbed on the edge of his box by Oduor and Miller
  • 4:37pm
    Mowatt off for Kane
  • 4:40pm
    84 Chance for Swansea, Bidwell volleys over from a Fulton cross. Difficult opportunity
  • 4:45pm
    Into the 90th minute, Barnsley trailing 2-0 and do not look like getting back into the game
  • 4:46pm
    Four added minutes
  • 4:49pm
    Connor Roberts
  • 4:50pm
    90+5 Herbie Kane's 22-yard free-kick goes just wide of the bottom left corner
  • 4:50pm
    FULL-TIME: Swansea 2, Barnsley 0.