Match ends, Barnsley 1, Luton Town 3.
Luton Town scored three first-half goals as they cruised to victory at fellow promoted side Barnsley for their first Championship win of the season.
Jacob Butterfield had the Hatters in front after two minutes at Oakwell, before James Collins doubled the advantage from close range.
Harry Cornick scored a third for Graeme Jones' side with barely half an hour played, after a free-kick routine.
Mallik Wilks grabbed a consolation goal for the Tykes after the break, but Daniel Stendel's team are now winless since the opening day of the season.
Luton, who beat Barnsley to the League One title in 2018-19, remain in the lower third of the early Championship standings, but will be further encouraged by their attacking efforts.
Only five sides in the division have scored more than the Hatters' eight so far this season - with all of those sides in amongst the formative top six.
But Barnsley have now won just four of their past 25 games at Championship level, drawing seven and losing 14 of those matches.
The Tykes also continued a worrying trend of conceding at least two goals in each of their league matches since beating Fulham 1-0 on 3 August.
Barnsley manager Daniel Stendel told BBC Radio Sheffield:
"The first half was very difficult to explain. We were looking insecure and lost all our confidence.
"We tried to change things in the second half and we tried to come back, but when you play the first half like that, it's very difficult.
"We are learning and we are developing these players with these abilities, but it was very difficult to find a player to say 'come on, we can do it'.
"It's not easy but they need to learn fast. We are working on a good team spirit but these players don't have a lot of experience."
Luton Town manager Graeme Jones:
"I think we need to enjoy the win and the performance because we were ruthless at times and I mean ruthless. If we'd have been 5-0 up at half-time, nobody could have complained.
"I knew we were really close [to earning a first league victory] but there comes a time when you have to win a game of football, no matter who you are.
"The psychological barrier was getting broken down week by week. I think we'll take a lot from it [the result]."
- 5DiabyBooked at 41minsSubstituted forHalmeat 67'minutes
- 6AndersenSubstituted forGreenat 45'minutes
- 23PinillosSubstituted forWilliamsat 45'minutes
- 36WilksBooked at 77mins
- 10BähreBooked at 56mins
- 26BreeSubstituted forGallowayat 90+3'minutes
- 25LuaLuaBooked at 44minsSubstituted forMpanzuat 81'minutes
- 14CornickSubstituted forLeeat 85'minutes
- Steve Martin
- Shots on Target
Second Half ends, Barnsley 1, Luton Town 3.
Substitution, Luton Town. Brendan Galloway replaces James Bree.
Foul by Mike-Steven Bähre (Barnsley).
Elliot Lee (Luton Town) wins a free kick in the defensive half.
Attempt missed. Mamadou Thiam (Barnsley) right footed shot from the centre of the box is too high. Assisted by Jordan Green.
Corner, Barnsley. Conceded by Matty Pearson.
Substitution, Luton Town. Elliot Lee replaces Harry Cornick.
Delay over. They are ready to continue.
Delay in match because of an injury Samuel Sahin-Radlinger (Barnsley).
Samuel Sahin-Radlinger (Barnsley) wins a free kick in the defensive half.
Foul by James Collins (Luton Town).
Attempt missed. Mallik Wilks (Barnsley) header from the centre of the box is close, but misses to the left. Assisted by Alex Mowatt with a cross following a corner.
Substitution, Luton Town. Pelly-Ruddock Mpanzu replaces Kazenga LuaLua.
Corner, Barnsley. Conceded by Simon Sluga.
Attempt saved. Alex Mowatt (Barnsley) right footed shot from outside the box is saved in the bottom right corner. Assisted by Luke Thomas.
Foul by Mike-Steven Bähre (Barnsley).
Andrew Shinnie (Luton Town) wins a free kick on the right wing.
Mallik Wilks (Barnsley) is shown the yellow card for a bad foul.
Foul by Mallik Wilks (Barnsley).