Barnsley slipped further into relegation danger with a third successive league defeat - their worst run since January/February 2018 (also 3)
This was also a third successive home defeat (after going 29 home games without losing) their worst home run since November/December 2017 (also 3)
Everything had looked rosy when Cauley Woodrow scored another goal of the month contender in the very first minute (59 seconds) - the earliest the Reds have scored since Kieffer Moore netted after 15 seconds at Gillingham in February.
It is Barnsley's earliest Championship goal since December 2011 (Ricardo Vaz Te in the first minute v Crystal Palace at Oakwell)
This was the first time Barnsley have lost when Woodrow has opened in the scoring (W6 D1 L1 - all comps)
Barnsley lost after opening the scoring for the first time since the final game of last season - these are the only two occasions they have lost when going 1-0 up since January 2018 - they have gone 1-0 up 37 times since.
Brentford secured the points through an Ollie Watkins hattrick - the first opponent to score a hattrick against Barnsley since Nick Powell for Wigan in April 2017. It is the first opposition treble at Oakwell since Henri Lansbury for Nottingham Forest in November 2016.
It is the first time a Brentford player has scored a hattrick since Said Benrahma against Hull in February and the first Bees hattrick on the road since January 2009 - Jordan Rhodes at Shrewsbury in League Two.
Watkins has now scored 87.5% of Brentford's Championship goals this season (7/8) - Bryan Mbeumo is the only other player to net for the Bees in the league this season.
Thanks to Woodrow's wonder strike it meant Barnsley avoided going a full calendar month without scoring however one goal is their lowest since November 2013 - also 1 (only including months where more than one league game was played)
There were no wins in September - the first calendar month Barnsley have been winless since March 2018 1 (only including months where more than one league game was played)
There were no bookings in a Barnsley game for the first time since the 3-0 win at Plymouth in April and the first time at Oakwell since the 1-0 win v Southend in November 2018 (league matches only)
Barnsley defeated Brentford 2-0 at Oakwell in April 2018 but have now failed to defeat the Bees in back-to-back league matches since April 2003.
The Bees won at Oakwell for the first time in five visits.
Since beating Fulham on the opening weekend, Barnsley are now winless in their past eight Championship games (D2 L6) - their worst league run since November/December 2017 (10 - D4 L6).
Barnsley have netted only five goals in their nine league games (at least two less than anybody else in the Championship) It is Barnsley's lowest at this stage of a season since 2008-2009 (4 from 9)
Barnsley have lost six of their first nine league games for the first time since 2013-2014 (7 of first 9) they were relegated from the Championship at the end of that season.
They have won only one of their first ten in all competitions for the first time since that 2013-2014 campaign when they won only one of the first 13.
The Reds have now won just four of their past 29 games at Championship level (D8 L17)
This is the first time Barnsley have won their first league game of the season but then failed to win any of the next eight since 1971-1972 when after opening a Division Three campaign with a 4-2 win over Walsall they failed to win any of their next 13 league matches - they were relegated at the end of that campaign.
40. Brad Collins
12. Dimitri Cavare
6. Mads Andersen
24. Aapo Halme
2. Jordan Williams
21. Toby Sibbick
27. Alex Mowatt (C)
7. Jacob Brown
11. Conor Chaplin
16. Luke Thomas
9. Cauley Woodrow
19. Patrick Schmidt (for Chaplin 63)
36. Mallik Wilks (for Thomas 63)
26. Mamadou Thiam (for Cavare 74)
13. Jack Walton, 15. Jordan Green, 20. Callum Styles, 23. Dani Pinillos.
1. David Raya
22. Henrik Dalsgaard
18. Pontus Jansson (C)
23. Julian Jeanvier
3. Rico Henry
8. Mathias Jensen
6. Christian Norgaard
12. Kamohelo Mokotjo
7. Sergi Canos
11. Ollie Watkins
10. Said Benrahma
5. Ethan Pinnock (for Canos 79)
14. Josh Dasilva (for Jensen 85)
9. Nikos Karelis (for Watkins 88)
19. Bryan Mbeumo, 20. Josh Clarke, 28. Luke Daniels, 31. Jan Zamburek.
Brentford manager Thomas Frank said:
"It was a top performance from Ollie.
"I think the way he converted himself to a number nine from a number 10 is impressive, not only today but for the season. He's scored seven goals now.
"Today he was in the right position when we needed him. His hold-up play and continual pressing all the way through the game was impressive.
"We've been working very hard with him to arrive in the box in the right positions and he definitely did that three times today.
"I think he has all the qualities needed to play higher. That's why we're very pleased that he signed a four-year contract with us a month ago. Very clever!"
Sky Bet Championship results:
FRIDAY 27TH SEPTEMBER
Fulham (10th) 2-0 Wigan Athletic (21st)
Stoke City (24th) 2-3 Nottingham Forest (3rd)
SATURDAY 28TH SEPTEMBER
Queens Park Rangers (9th) 0-2 West Bromwich Albion (1st)
Blackburn Rovers (11th) 1-2 Luton Town (17th)
Charlton Athletic (6th) 1-0 Leeds United (4th)
Derby County (15th) 3-2 Birmingham City (13th)
Huddersfield Town (23rd) 1-1 Millwall (18th)
Hull City (16th) 2-2 Cardiff City (12th)
de Wijs 89
Middlesbrough (19th) 1-4 Sheffield Wednesday (7th)
Clayton og 5
Preston North End (5th) 3-3 Bristol City (8th)
Gallagher pen 45+2
Johnson pen 51
Swansea City (2nd) 1-1 Reading (20th)
SUNDAY 29TH SEPTEMBER 2019
BARNSLEY (22nd) 1-3 Brentford (14th)
Barnsley lie in 22nd place in the Sky Bet Championship with 5 points from 9 games. We are 12 points outside the Play-Offs, 13 points outside the Automatic Promotion Places, 14 points outside First Place and 3 points inside the Relegation Zone.
Up to 30/9/19
Sky Bet Championship Matchday Ten: Barnsley v Derby County, Wednesday 2nd October 2019. Kick-Off: 7:45pm
On The Road:
Sky Bet Championship Matchday Eleven: Preston North End v Barnsley, Saturday 5th October 2019. Kick-Off: 3pm