Barnsley won their second Yorkshire derby in a week to secure their third victory in four league games and their seventh in ten since the start of December.
This was the Reds seventh away win of the season; five of them have been accompanied with clean sheets.
It is the most away wins they have achieved in a single season at this level since the play-off campaign of 1999-2000 when they won nine- their most ever at this level.
The Reds currently have the third best away record in the division having picked up 22 points on the road. Only the top two in the league Newcastle (31) and Brighton (25) have picked up more.
This victory gave Barnsley their first league double of the season, after defeating the Millers 4-0 at Oakwell back in August.
It is the first time Barnsley have done the double over Rotherham since 1981-1982 but they are undefeated at Rotherham in each of their past four visits (W3 D1)
It was their first ever visit to the New York Stadium- the 166th different Football League ground Barnsley have played at.
This match saw the two clubs who had seen the most goals scored in their matches this season, but only one was netted in this match.
Adam Armstrong grabbed the goal- his fourth for the club. Barnsley have won three of the four matches he has scored in – all away.
Ryan Kent (YC)
Callum Evans (for White 60)
Ryan Williams (for Armstrong 81)
Adam Hammill (for Kent 87)
Nick Townsend, Adam Jackson, George Moncur, Stefan Payne.
Sky Bet Championship results:
Tuesday 24th January 2017:
Brighton 1-0 Cardiff
Reading 1-0 Fulham
Wednesday 25th January 2017:
Leeds 2-0 Nottingham Forest
Saturday 28th January 2017:
Norwich 2-0 Birmingham
Preston 1-1 Ipswich
Hugill 89 Lawrence 16
QPR 1-2 Burton
Washington 63 Murphy 11, Dyer 52
Reading 2-1 Cardiff
Swift 42 Ralls pen 45+1
Rotherham 0-1 Barnsley
Barnsley lie in 7th place in the Sky Bet Championship with 44 points from 28 games.
We are 1 point outside the Play-Offs, 14 points off the Automatic Promotion Places, 16 points off First place and 19 points above the Relegation Zone.
Up to 29/1/17
Sky Bet Championship Matchday Twenty-Nine: Barnsley v Wolverhampton Wanderers, Tuesday 31st January 2016. Kick-Off: 7:45pm.
Over 65: £18
Age 17-21: £18
Under 17: £10
Under 12: £5
On The Road:
Sky Bet Championship Matchday Thirty: Reading v Barnsley: Saturday 11th February 2017. Kick-Off: 3pm
Season Ticket Holder Adult: £20
Over 65: £16
Season Ticket Holder Over 65: £13
Young Adult (18-24 yrs): £13
Season Ticket Holder Young Adult: £10
Juvenile Under 18: £8
Season Ticket Holder Under 18: £5
Family Area Seating (sold strictly to families in the combinations shown):
Two Adults with Two Under 18s: £42
Two Adults with One Under 18: £39
One Adult with Two Under 18s: £26
One Adult with One Under 18: £22