SWANSEA 0 BORO 3
SWANSEA: De Vries, Williams, Tate, Monk, Rangel, Britton, Orlandi (Pintado 76), Dyer, MacDonald (Richards 63), Gower (Thomas 62), Dobbie.
Subs Not Used: Painter, Cornell, Bessone, Bond.
BORO: Coyne, McMahon, Wheater, Huth, Williams, Grounds, Yeates (Arca 85), O'Neil, Adam Johnson, Lita (Franks 79), Emnes (Sanli 67).
Subs Not Used: Steele, Hoyte, Taylor, Hines.
Middlesbrough's bid to make an immediate return to the Premier League belatedly began at Swansea's Liberty Stadium as Gareth Southgate's men came away with an impressive 3-0 win.
Having being held to a frustrating 0-0 draw by Sheffield United in their opening fixture last weekend, Boro showed their promotion credentials against the Swans who are struggling to adapt to life after Roberto Martinez.
Adam Johnson, Marvin Emnes and Tuncay grabbed the goals for the north-east outfit, earning them a first league win over their opponents since 1983.
Middlesbrough, making their first visit to Swansea since an FA Cup defeat in January 1995, started the better of the two sides and could have been ahead as early as the sixth minute when David Wheater thumped a header against the post.
The highly-rated defender got on the end of Johnson's corner to get the effort in and, after it came back into play, Robert Huth saw his drive well blocked by Ashley Williams.
Scottish striker Stephen Dobbie's weak effort from just inside the area got Swansea going in attack, before he warmed Danny Coyne's palms with a low drive moments later.
The former Queen of the South man remained his side's best outlet and saw another strike loop into Coyne's hands, while at the other end Mark Yeates drilled an effort just wide.
Boro were certainly the more composed of the two sides in the early exchanges and they deservedly went ahead with 32 minutes gone, although there was a hint of fortune about Johnson's opener.
There seemed to be little danger when the winger collected the ball on the left yet his cross evaded everyone and crept into Dorus De Vries' bottom corner for Boro's first goal in the second tier since Craig Hignett scored against Oxford in May 1998.
Dobbie scuffed a close-range effort wide moments after the interval and Swansea searched for a way back into the game, but their hopes were quickly extinguished as Emnes rifled Boro further ahead.
The Dutch playmaker struggled with injuries last season but helped to banish those memories as he let fly with a 20-yard drive that flew into the top corner.
Dobbie continued to frustrate the home fans as he dragged a shot across the face of goal, while captain Garry Monk should have done better with a free header from a corner.
Andrea Orlandi refused to give up the chase for the home side as he forced Coyne to tip his fizzing free-kick over the bar before Turkey striker Tuncay, who is expected to leave Boro before the transfer window shuts, nearly marked coming on as substitute with a goal as he saw an effort drift wide.
But he did not have to wait too much longer to make his mark, bundling home Johnson's corner eight minutes from time.
BORO v SWANSEA ... THE HISTORY ...
2009/2010 Sat 15 Aug Swansea City 0 - 3 Middlesbrough Championship
1994/1995 Tue 17 Jan Middlesbrough 1 - 2 Swansea City F.A. Cup
Sat 07 Jan Swansea City 1 - 1 Middlesbrough F.A. Cup
1983/1984 Fri 27 Apr Swansea City 2 - 1 Middlesbrough Second Division
Sat 26 Nov Middlesbrough 1 - 0 Swansea City Second Division
1981/1982 Sat 15 May Swansea City 1 - 2 Middlesbrough First Division
Sat 13 Feb Middlesbrough 1 - 1 Swansea City First Division
1980/1981 Sat 03 Jan Swansea City 0 - 5 Middlesbrough F.A. Cup
1966/1967 Tue 15 Nov Swansea Tn. 4 - 4 Middlesbrough Third Division
Mon 17 Oct Middlesbrough 4 - 1 Swansea Tn. Third Division
1964/1965 Sat 20 Mar Swansea Tn. 1 - 2 Middlesbrough Second Division
Sat 07 Nov Middlesbrough 4 - 0 Swansea Tn. Second Division
1963/1964 Sat 08 Feb Middlesbrough 2 - 1 Swansea Tn. Second Division
Sat 28 Sep Swansea Tn. 2 - 1 Middlesbrough Second Division
1962/1963 Sat 02 Mar Swansea Tn. 1 - 1 Middlesbrough Second Division
Sat 13 Oct Middlesbrough 2 - 2 Swansea Tn. Second Division
1961/1962 Sat 10 Feb Middlesbrough 1 - 3 Swansea Tn. Second Division
Sat 23 Sep Swansea Tn. 3 - 3 Middlesbrough Second Division
1960/1961 Sat 15 Apr Swansea Tn. 3 - 2 Middlesbrough Second Division
Sat 12 Nov Middlesbrough 3 - 1 Swansea Tn. Second Division
1959/1960 Sat 19 Mar Middlesbrough 2 - 0 Swansea Tn. Second Division
Sat 28 Nov Swansea Tn. 3 - 1 Middlesbrough Second Division
1958/1959 Sat 21 Mar Middlesbrough 6 - 2 Swansea Tn. Second Division
Sat 01 Nov Swansea Tn. 5 - 2 Middlesbrough Second Division
1957/1958 Sat 01 Mar Middlesbrough 2 - 1 Swansea Tn. Second Division
Sat 19 Oct Swansea Tn. 1 - 4 Middlesbrough Second Division
1956/1957 Sat 09 Mar Middlesbrough 6 - 2 Swansea Tn. Second Division
Sat 27 Oct Swansea Tn. 2 - 2 Middlesbrough Second Division
1955/1956 Wed 31 Aug Middlesbrough 4 - 1 Swansea Tn. Second Division
Thu 25 Aug Swansea Tn. 2 - 1 Middlesbrough Second Division
1954/1955 Sat 26 Feb Middlesbrough 4 - 2 Swansea Tn. Second Division
Sat 09 Oct Swansea Tn. 2 - 0 Middlesbrough Second Division
1928/1929 Sat 09 Mar Middlesbrough 0 - 0 Swansea Tn. Second Division
Sat 27 Oct Swansea Tn. 2 - 0 Middlesbrough Second Division
1926/1927 Sat 07 May Swansea Tn. 0 - 1 Middlesbrough Second Division
Sat 18 Dec Middlesbrough 7 - 1 Swansea Tn. Second Division
1925/1926 Sat 23 Jan Middlesbrough 0 - 3 Swansea Tn. Second Division
Sat 12 Sep Swansea Tn. 4 - 0 Middlesbrough Second Division