Question: Which club does Brett Emerton play in that competes in League One?

Context paragraphs:
List of Milton Keynes Dons F.C. seasons: Milton Keynes Dons Football Club (usually abbreviated to MK Dons) is a professional association football club based in Milton Keynes, Buckinghamshire, England, founded in 2004.  The club was formed from Wimbledon F.C. after the latter had relocated to Milton Keynes.  The club renamed itself as the 'Milton Keynes Dons' but subsequently considers itself to be a new club founded in 2004 (the club badge includes MMIV - Roman Numerals for 2004).  They continued in Wimbledon's league place which, after relegation in the previous season, was in the 2004–05 Football League One.  After two seasons in the third tier of English football they were relegated to the fourth tier (League Two).  They were promoted in their second League Two season, as champions.  Their second spell in League One lasted seven seasons, when in 2015, they finished in second place and therefore moved up to the Football League Championship.  However in 2016, they were relegated back down to League One.

Colchester United F.C. league record by opponent: Colchester United Football Club is an English professional football club based in Colchester, Essex, that was founded in 1937.  From the 1937–38 season, the club played in the Southern Football League until 1950, when they were elected to the Football League.  After playing in the Third Division South for eight seasons, Colchester remained in the Third Division when the league was re-organised by finishing 12th in 1958.  The club were relegated to the Fourth Division in 1961, but made an immediate return to the Third Division after finishing the 1961–62 season in second position, one point behind Millwall.  They bounced between the Third and Fourth divisions until 1990, when the club were relegated from the Football League for the first time in 40 years.  After two seasons in the Football Conference, the U's were promoted back to the Football League after winning the Conference title on goal difference over Wycombe Wanderers in 1992.  Colchester played in the Third Division between 1992 and 1998, when they won promotion to the Second Division after a play-off final win against Torquay United at Wembley.  The club remained in the third tier until 2006, as they were promoted to the Championship, the second tier of English football, for the first time in their history, ending the season as runners up in League One to Southend United.  The U's spent two seasons in the Championship, earning their highest-ever league finish of 10th position in the second tier before being relegated back to League One in 2008.  Following relegation to League Two at the end of the 2015–16 season, Colchester made a return to the fourth tier of English football for the first time in 18-years.

List of Stevenage F.C. players: Stevenage Football Club is an English association football club based in Stevenage, Hertfordshire, currently playing in League One.  Following the demise of the town's former club, Stevenage Athletic, Stevenage Borough was formed in 1976.  Following promotions through both the United Counties and Isthmian leagues, Stevenage gained Football Conference status in 1994 and spent sixteen straight seasons in the highest tier of non-league football, before they were promoted to League Two in 2010.  In their first ever Football League season, Stevenage won promotion to League One, the third tier of English football.  Below, is a list of players who have made 50 or more appearances for the Hertfordshire side, as well as including those who have, after leaving Stevenage, gone on to play in either of the two highest tiers of English football.  Certain players are included who fell short of the 50 total but have been included due to making a significant contribution to the club's history.  In addition to this, the table also illustrates players who hold any records at the club.

2011–12 Stevenage F.C. season: The 2011–12 season was Stevenage F.C.'s second season in the Football League, where the club competed in League One.  This article shows statistics of the club's players in the season, and also lists all matches that the club played during the season.  Their sixth-place finish and subsequent successful play-off campaign meant it was Stevenage's first ever season of playing in League One, having only spent one season in League Two.  The season also marked the second season that the club played under its new name – Stevenage Football Club, dropping 'Borough' from its title as of 1 June 2010.  The season started out as the third year in charge for manager Graham Westley during his second spell at the club; having previously managed the Hertfordshire side from 2003 to 2006.  However, Westley left Stevenage in January 2012, and joined fellow League One side Preston North End.  The vacant managerial position was filled by former Colorado Rapids manager Gary Smith, signing a contract until 2014.

Blackburn Rovers F.C.: Blackburn Rovers Football Club is a professional association football club based in Blackburn, Lancashire, England.  The club competes in League One, the third tier of the English football league system, following relegation from the Championship at the conclusion of the 2016–17 season.

Milton Keynes Dons F.C. league record by opponent: Milton Keynes Dons Football Club is an English association football club based in Milton Keynes, Buckinghamshire that has competed in the English Football League (Championship, League One and League Two, the second, third and fourth tiers in English football respectively) since the team was founded.  The club found itself in League One after Wimbledon F.C. relocated to Milton Keynes in 2003.  The club gave back Wimbledon's trophies to the London Borough of Merton in 2007, and since then, officially, the club is considered to have been founded in 2004.  The MK Dons currently compete in League One as of the 2016–17 season.

Fleetwood Town F.C.: Fleetwood Town Football Club is a professional association football club based in the town of Fleetwood, Lancashire, England.  The team compete in League One, the third tier of English football.  Established in 1997, the current Fleetwood Town F.C. is the third incarnation of the club which first formed in 1908.  Their home strip is red shirts with white sleeves and white shorts.  The home ground is Highbury Stadium in Fleetwood and its supporters are affectionally known as The Cod Army.  The club won the 2011–12 Football Conference, and played in the Football League for the first time in the 2012–13 season.  In May 2014, at Wembley, Fleetwood won the promotion play-off to League One, the club's 6th promotion in 10 years.

2012–13 Stevenage F.C. season: The 2012–13 season was Stevenage F.C.'s third season in the Football League, where the club competed in League One.  This article shows statistics of the club's players in the season, and also lists all matches that the club played during the season.  Their sixth place finish and subsequent play-off semi-final defeat during the 2011–12 campaign means it was Stevenage's second season of playing in League One, having only spent two years as a Football League club.  The season also marked the third season that the club played under its new name – Stevenage Football Club, dropping 'Borough' from its title as of 1 June 2010.  It was manager Gary Smith's first start to a season as Stevenage manager, having been appointed in January 2012.  However, Smith was sacked in March 2013 following a run of 14 defeats in 18 games.  His successor was Graham Westley, returning for his third spell in-charge of Stevenage, having previously managed the club for three years from 2003 to 2006, and then four years during his second-spell from 2008 to 2012.

Brett Emerton: Brett Michael Emerton (born 22 February 1979) is a retired Australian professional footballer who played for Sydney Olympic, Sydney FC, Feyenoord Rotterdam, Blackburn Rovers and the Australian national team.  He is the third most capped player for Australia.  Able to play as a wide midfielder or defender, Emerton was known for his "speed, ball control and creativity."

2013–14 Stevenage F.C. season: The 2013–14 season will be Stevenage F.C.'s fourth season in the Football League, where the club will be competing in League One.  This article shows statistics of the club's players in the season, and also lists all matches that the club will play in the season.  Their 18th-place finish during the 2012–13 campaign means it will be Stevenage's third season of playing in League One, having only spent three years as a Football League club.

Supporting paragraphs: Brett Emerton Blackburn Rovers F.C.
Answer: Blackburn Rovers Football Club