Tom Bradshaw failed to start for the second game running - the first time this has happened since he was a substitute for the 3-0 win over Sunderland in August and then the 1-1 draw at Preston in September.
It is the first time since October/November 2016 that Bradshaw has gone back to back games without making an appearance.
Oli McBurnie has now scored four goals in his first four Barnsley starts, meaning only Tom Bradshaw (11) and the departed Harvey Barnes (5) have score more for Barnsley in 2017-2018.
Unsurprisingly therefore McBurnie also currently has the best minutes per goal ratio this season at the club - he has scored a goal every 85 minutes and seven of his 10 shots have been on target.
Hull conceded a league goal at the KCOM Stadium for the first time in four matches.
Dimitri Cavare has made only six appearances for Barnsley so far, and has been shown a card in three of them (3 yellows 1 red)
Hull captain Michael Dawson scored Hull's equaliser - two of his three goals this season have come against South Yorkshire sides (also at Sheffield Wednesday in December)
Barnsley ended a four match losing league run at the KCOM, their last league victory there, in 2006, was also the last occasion they have scored more than once on Humberside.
The Reds have gone back to back away league games without defeat for the first time since October/November (a run of three)
Hull's last six goals in the Championship have all been scored by different players, whereas four of Barnsley's last five have been scored by McBurnie.
Barnsley had only 40% possession in the match, the lowest since the 2-1 defeat at Fulham on the 23rd December (38%)
Hull had 17 shots on goal which was the most an opponent has had against Barnsley since that Fulham match (19)
Eight of the Tigers 17 shots were on target, the most by a Reds opponent since Bristol City on the opening day of the season (11)
Barnsley did not win a single corner, the first time this has happened since another trip to Fulham in January 2017.
Matty Pearson (for Jackson 45+8)
Andy Yiadom (for Thiam 62)
George Moncur (for McBurnie 78)
Adam Davies, Tom Bradshaw, Stevie Mallan, Connor Mahoney.
Allan McGregor, Ola Aina, Michael Dawson, Angus MacDonald, Max Clark, Sebastian Larsson, Jackson Irvine, Jarrod Bowen, Jon Toral, Adama Diomande, Nouha Dicko.
Will Keane (for Toral 45+8)
Kamil Grosicki (for Diomande 62)
Fraizer Campbell (Dicko 70)
Michael Hector, David Marshall, Fikayo Tomori, Kevin Stewart.
Hull manager Nigel Adkins said:
"We were looking for all three points. We didn't reach the heights we reached on Friday in the first half.
"We've gifted them a goal and they've had something to hang onto. They've put everyone behind the ball and it's up to us to break them down.
"We've had enough opportunities in and around the box - we've had 17 shots on goal - but it was captain Dawson who's scored the all-important goal."
Sky Bet Championship results:
Tuesday 27th February 2018:
Hull City 1-1 BARNSLEY
Dawson 73 McBurnie 22
Reading 1-3 Sheffield United
Richards 51 Sharp 11, 63, Duffy 44
Barnsley lie in 21st place in the Sky Bet Championship with 32 points from 34 games.
We are 23 points outside the Play-Offs, 35 points off the Automatic Promotion Places, 41 points off First place and 2 points above the Relegation Zone.
Up to 28/02/18
Sky Bet Championship Matchday Thirty Five: Barnsley v Norwich City, Saturday 3rd March 2018. Kick-Off: 3pm
On The Road:
Sky Bet Championship Matchday Thirty Six: Cardiff City v Barnsley: Tuesday 6th March 2018. Kick-Off: 7:45pm