Question: Which NHL right winger endorsed a failed player equipment line by hockey equipment maker Koho?
Context: Jaromír Jágr (] ; born 15 February 1972) is a Czech professional ice hockey right winger who is currently an unrestricted free agent.  He has formerly played in the NHL with the Pittsburgh Penguins, Washington Capitals, New York Rangers, Philadelphia Flyers, Dallas Stars, Boston Bruins, New Jersey Devils and Florida Panthers, serving as captain of the Penguins and the Rangers.  After leaving the Rangers, he played for three seasons in the Kontinental Hockey League (KHL) with Avangard Omsk before returning to the NHL with the Flyers. Sher-Wood Hockey Inc. is a maker of ice hockey equipment, which it sells under the Sher-Wood, SWD, and TPS brands.  Since 2008, it has been the official supplier of game pucks to the NHL, taking over those duties upon its purchase of InGlasCo, which had served in that capacity prior its purchase by Sher-Wood. Bauer Hockey (renamed Nike Bauer from 2005 to 2008) is one of the leading manufacturers of ice hockey equipment, fitness and recreational skates and apparel.  Bauer produces helmets, gloves, sticks, skates, shin guards, pants, shoulder pads, elbow pads, as well as goalie equipment.  Bauer primarily developed and manufactured hockey skates prior to 1990, when it acquired the hockey assets of Cooper Canada Ltd. Bauer operates as a unit of Peak Achievement Athletics Inc. of Exeter, New Hampshire. STX (a contraction of the word "sticks" but commonly called "S-T-X") is a global sports equipment manufacturer based in Baltimore, Maryland.  It is a subsidiary of Wm. T. Burnett & Co.  STX makes lacrosse equipment, field hockey equipment and ice hockey equipment, but its main business is in manufacturing of men's and women's lacrosse sticks and protective gear, including gloves, pads, and women's eyewear.  The company was founded in 1970 by Richard B.C. Tucker, Sr. as STX Inc.  STX's first stick was the double wall, synthetic lacrosse head (U.S. Pat.  #3,507,495), which was the first synthetic stick and the only type used to score goals in the first NCAA Men's Lacrosse Championship (1971). John Jay Caufield (born July 17, 1960) is an American former NHL right winger.  Jay was raised in the Towamencin Township, Pennsylvania, area about a mile outside Lansdale borough.  He graduated from North Penn High School. The Case Corporation was a manufacturer of construction equipment and agricultural equipment.  Founded by Jerome Increase Case as the J. I. Case Threshing Machine Company, it operated under that name for most of a century.  For another 66 years it was the J. I. Case Company, and was often called simply Case.  In the late 19th century, Case was one of America's largest builders of steam engines, producing self-propelled portable engines, traction engines and steam tractors.  It was a major producer of threshing machines and other harvesting equipment.  In the 20th century, Case was among the 10 largest builders of farm tractors for many years.  In the 1950s its construction equipment line became its primary focus, with agricultural business second. Walter "Gunzo" Humeniuk (June 21, 1929 – 1987) was a trainer and backup goaltender for the Detroit Red Wings and the Chicago Black Hawks of the NHL for much of the 1950s and 1960s, although he was never officially listed as a player.  He spent 1948 to 1955 with the Detroit Red Wings.  He went to the Chicago Black Hawks in 1955.  It is commonly reported that he was "traded" from Detroit to Chicago, but most likely he was brought over as an assistant trainer/equipment manager by General Manager Tommy Ivan, who had left the Red Wings in 1954 to take over the Blackhawks.  From 1955 to 1961, Humeniuk was the Blackhawks' backup goaltender and assistant trainer.  He would win 2 Stanley Cup Championships in his Career with Detroit in 1950 and Chicago in 1961.  He remained with the Blackhawks organization until 1963.  He would later open a hockey equipment store in suburban Berwyn, which burned in 1970, then re-opened in River Forest, Illinois.  He was elected to the Illinois Hockey Hall of Fame in 2005. Cooper Canada Ltd. was a sporting goods and fine leather goods manufacturer based in Toronto, Ontario, Canada.  In its heyday, the 1960s through to the 1980s, the company was Canada's leading producer of leather baseball gloves and protective ice hockey equipment.  The company pioneered team-colored hockey equipment and the use of nylon, foam, and modern plastics in equipment manufacturing. Tom Kühnhackl (born 21 January 1992) is a German ice hockey right winger who currently plays for the Pittsburgh Penguins of the National Hockey League (NHL).  He has also played professionally for the Wilkes Barre/Scranton Penguins of the American Hockey League, and Augsburger Panther of the Deutsche Eishockey Liga, the highest German hockey league.  He was a top-ranked prospect for the 2010 NHL Entry Draft, ranked eighth among European skaters by the NHL Central Scouting Bureau and was selected 110th overall by the Pittsburgh Penguins.  Kühnhackl was selected by the Windsor Spitfires twenty-fourth overall in the 2009 CHL Import Draft and moved to North America for the 2010–11 season.  After several seasons with the Penguins minor league affiliates, Kühnhackl made his NHL debut with the team in 2016. Koho is a brand of ice hockey equipment that originated from Finland.  Currently, Koho equipment is manufactured by The Hockey Company (parent company of CCM, now owned by Adidas).  Koho is especially known for its goaltending equipment.  The main endorsees, instrumental to marketing the brand throughout the 1990s and early 2000s, included Arturs Irbe, Patrick Roy, Félix Potvin, Jocelyn Thibault, Tommy Salo, Mathieu Garon, Jean-Sébastien Giguère and Roberto Luongo.  Although Koho had the support of high-profile endorsees such as Jaromír Jágr, the player equipment lines were comparatively unsuccessful.  The brand name is currently owned by MonkeySports, which operates GoalieMonkey.com and Hockeymonkey.com.  They are the exclusive retailer of the brand.
Answer: Jaromír Jágr