Question: Who are the northern rivals of the professional rugby union club whom Will Chudley made his debut game for Exeter against?

Context articles: Richard Lockwood
University of Tasmania Rugby Union Club
Will Chudley
Yenisey-STM Krasnoyarsk
Archie Rigg
Matthew Silva
Exeter Chiefs
Billy Jacques
Alnwick RFC
Sale Sharks

Richard "Dicky"/"Dickie" Evison Lockwood (11 November 1867 in Crigglestone – 10 November 1915 in Leeds) was a rugby union and professional rugby league footballer who played in the 1880s, 1890s, and 1900s, playing representative level rugby union (RU) for England from 1887 to 1894, and was captain in January and February 1894, and Yorkshire, and at club level for Dewsbury, and Heckmondwike, as a Three-quarter, and playing club level rugby league (RL) for Wakefield Trinity (Heritage № 33), as a Forward, e.g. Front row, Back row, or Lock.
 Prior to 3 September 1898, Dewsbury was a rugby union club, and prior to the 1896–97 Northern Rugby Football Union season, Heckmondwike was also a rugby union club.
University of Tasmania Rugby Union Club is a Rugby Union club in Tasmania.
 Established in 1933, the club is a member of the Tasmanian Rugby Union, affiliated with the Australian Rugby Union and plays in the Tasmanian Statewide League.
 The club was a founding member of the Tasmanian Rugby Union.
William Chudley (born 17 March 1988) is a rugby union player who plays at Scrum Half for Exeter Chiefs.
 He made his debut for Exeter against Sale Sharks on 1 September 2012.
Yenisey-STM Rugby Club is a Russian rugby union club founded in 1975.
 It is one of the two powerful Krasnoyarsk clubs, the other being their cross town rivals Krasny Yar.
 They participate in the Professional Rugby League, the premier rugby championship of Russia, and in 2015–16 qualified for the European Rugby Challenge Cup, making them the first Russian rugby union club ever to compete in a major European club competition.
 With an operating budget of €3.5m they are the second largest club in Russia after VVA Saracens.
Archie Rigg (January→March 1872 — April→June 1951) birth registered in Halifax, was an English rugby union and professional rugby league footballer who played in the 1890s, and 1900s, and coached rugby union in the 1910s, and 1920s, playing club level rugby union (RU) for Halifax, and playing representative level rugby league (RL) for Yorkshire, and at club level for Halifax (captain), and Bradford Northern, as a scrum-half/halfback , i.e. number 7, and coaching rugby union at the newly established Halifax RUFC (formed 1919), after completing his playing career, with fellow Halifax Hall Of Fame Inductee Joe Riley, his death was registered in Halifax.
 Prior to Tuesday 27 August 1895, Halifax was a rugby union club.
Matthew Silva (born 15 March 1970 in Tremorfa, Cardiff) is a Welsh rugby union and professional rugby league footballer who played in the 1980s, 1990s, and 2000s, and current rugby union coach, playing club level rugby union (RU) for St Albans RFC (Cardiff), Llandaff RFC, Newport RFC, Pontypool RFC, Newbridge RFC, West Hartlepool R.F.C., Cardiff RFC, Treorchy RFC, Rumney RFC, and Llantwit Major RFC, as a Number Eight, Fly-half, Centre, Wing, Fullback, and playing representative level rugby league (RL) for Wales, and at club level for Halifax, as a fullback , i.e. number 1, and coaching club level rugby union (RU) for Llantwit Major RFC, Beddau RFC, Cardiff RFC, and Rumney RFC, and Cardiff Blues Under-16, Under-18, and Under-20 and Bridgend Ravens RFC, from 2005 to 2013 he was the Welsh Rugby Union/Cardiff Blues Player Development Officer for the Vale of Glamorgan.
 From 2013 to 2015 he was Director of Rugby at Cowbridge Comprehensive School and was responsible for establishing the Rugby Academy that competes in the Welsh Rugby Union National Colleges League.
 In 2015 he became the Welsh Rugby Union and Ospreys Coach Development Officer.
Exeter Chiefs (officially Exeter Rugby Club or Exeter Rugby) are an English rugby union club based in Exeter, Devon that are the current English Premiership champions.
 The premiership is the top level of domestic rugby union in England.
 They also compete in the Anglo-Welsh Cup and European Rugby Cup competitions.
Billy Jacques was a rugby union and professional rugby league footballer who played in the 1890s, and 1900s, playing representative level rugby union (RU) for Yorkshire, and at club level for Hull F.C. (Prior to the 1895–96 Northern Rugby Football Union season, Hull F.C. was a rugby union club), and playing club level rugby league (RL) for St. Helens, and Hull F.C.
Alnwick RFC is an amateur rugby union club based in the town of Alnwick, Northumberland in north-east England.
 The club play in North 1 East, a level six league in the English rugby union system and are the most northerly rugby union club in English league rugby, (Berwick like their football team play in the Scottish rugby union system).
 Alnwick remain a strictly amateur club with all players paying annual and weekly match subscriptions.
 Alnwick regularly field three senior sides, all of which play competitive league and cup rugby.
 The club also has a junior section running teams from under 7's through to under 18's and a girls section.
Sale Sharks is an English professional rugby union club that plays in the English Premiership.
 Their northern rivals are the Newcastle Falcons.