Question: What relative to former NFL quarterback Peyton Manning has been a sport client of Greater Talent Network?

full_context: Document 1: Berk Communications: Berk Communication and Marketing Group is an American public relations firm. The company is best known for representing D'usse Cognac, Kevin Durant, Robinson Canó, CC Sabathia, Roc Nation Sports, Tao Group, Tidal and Alex Rodriguez. Berk was founded in 1999. Britney Spears hired Berk Communications in 2002 to promote Nyla, Spears' restaurant in Manhattan's Dylan Hotel. In October 2015, MWW, a public relations firm headquartered in New York, acquired a majority stake in Berk. The company operates as an independent subsidiary acquisition and has expanded across the United States and Europe. Ron Berkowitz is the company's President and CEO. In February 2016, Berk signed with The Statler Hotel & Residences as public relations support through the hotel's relaunch. When baseball player Alex Rodriguez announced his retirement in 2016, it was also announced that Berk Communications would continue to work with Rodriguez. Rodriguez first signed with Berk in 2013.
Document 2: Archie Manning: Elisha Archibald Manning III (born May 19, 1949) is a former American football quarterback who played professionally for 16 seasons in the National Football League (NFL). He played in the NFL for the New Orleans Saints from 1971 to 1982, and for short stints with the Houston Oilers and Minnesota Vikings. In college, he played for the Ole Miss Rebels football team at the University of Mississippi, and was later inducted into the College Football Hall of Fame. Manning is the father of Cooper Manning, former quarterback Peyton Manning, and Eli Manning, who is the current starting quarterback for the New York Giants. His sons Peyton and Eli have each won two Super Bowls.
Document 3: Eli Manning: Elisha Nelson Manning (born January 3, 1981) is an American football quarterback for the New York Giants of the National Football League (NFL). He played college football at the University of Mississippi. He was drafted as the first overall pick in the 2004 NFL Draft by the San Diego Chargers and was immediately traded to the Giants who in return gave up a package, highlighted by fourth overall selection Philip Rivers. He is the son of former NFL quarterback Archie Manning and the younger brother of former NFL quarterback Peyton Manning.
Document 4: Ken Marlin: Ken Marlin is an American investment banker, international strategist, and author of "The Marine Corps Way to Win on Wall Street: 11 Key Principles from Battlefield to Boardroom", available from St. Martin's Press in August 2016. He is the founder and managing partner of Marlin & Associates, an award-winning boutique investment bank and strategy advisor. He is a member of the “Market Data Hall of Fame” and, in 2011, Institutional Investor ("II"), the international publisher, named Ken as one of II’s “Tech 50”, which honored the 50 most “disruptive” figures in the financial technology sector. In 2014, Institutional Investor again, named Marlin to their "Tech 50" as one of the 50 most influential people in the financial technology industry. Again, he was the only investment banker on the list. In 2015 Institutional Investor named Marlin as one of the 35 most influential people in Fintech finance. Marlin also is a member of the Board of Directors and the Executive Committee of the Phoenix House Foundation; a Trustee and Board Member of the Madison Square Boys and Girls Club; a member of the Business Administration Board of Advisors of the University of the People; an active supporter of the Wall Street Warriors Foundation, The Marine Corps Heritage Foundation; the Hurricane Island Outward Bound School; and Outward Bound Peacekeeping. He has been quoted frequently in the media.
Document 5: Peyton Manning: Peyton Williams Manning (born March 24, 1976) is a former American football quarterback who played 18 seasons in the National Football League (NFL), primarily with the Indianapolis Colts. Considered to be one of the greatest quarterbacks of all time, he spent 14 seasons with the Colts and was a member of the Denver Broncos in his last four seasons. Manning played college football for the University of Tennessee, leading the Tennessee Volunteers to the 1997 SEC Championship in his senior season. He is the second son of former NFL quarterback Archie Manning and older brother of New York Giants quarterback Eli Manning.
Document 6: Evan Engram: Evan Michael Engram (born September 2, 1994) is an American football tight end for the New York Giants of the National Football League (NFL). He played college football at Mississippi, and was drafted by the Giants with the 23rd pick in the first round of the 2017 NFL Draft.
Document 7: Tom Brady–Peyton Manning rivalry: The Tom Brady–Peyton Manning rivalry is a series of games that took place between 2001 and 2015, involving two quarterbacks in the National Football League (NFL): Tom Brady and Peyton Manning. Brady has played for the New England Patriots since , when he was the 199th selection in the sixth round of the 2000 NFL Draft. He has been the starter since , after Drew Bledsoe was injured early in the season, and has been so since, with the exception of , when he tore his ACL in the opening game. Manning was drafted by the Indianapolis Colts in the 1998 NFL Draft with the number 1 pick, and played for the Colts until a neck injury caused him to miss the entire season. Prior to the season, Manning signed with the Denver Broncos, whom he played for up to his retirement following the season.
Document 8: Steve Kettmann: Kettmann, despite having written on a wide variety of topics, is best known for his work on several baseball books, most recently "Baseball Maverick: How Sandy Alderson Revolutionized Baseball and Revived the Mets" (Grove Atlantic, April 2015). The book explores Alderson's role as general manager of the Oakland A's in the 1980s and 1990s, including his role as a mentor to the young Billy Beane, who was later made famous in the movie adaption of the Michael Lewis book "Moneyball". It also focuses on Alderson's years as general manager of the New York Mets starting in late 2010.
Document 9: Cooper Manning: Cooper Manning (born March 6, 1974) is the host for the show "The Manning Hour" for Fox Sports. He is the oldest son of former professional football quarterback Archie Manning, and the older brother of former professional football quarterback Peyton Manning and current New York Giants quarterback Eli Manning.
Document 10: Danny Etling: Daniel Patrick Etling (born July 22, 1994) is an American football quarterback for the LSU Tigers football team. He arrived at LSU after transferring out of Purdue, where he was a true freshman for the 2013 team. He is a right-handed quarterback known for his strong arm. He was a 4-star high school prospect as a senior. He served the first 4 games of the 2013 season as the backup quarterback for Purdue. He was named Purdue's starting quarterback during their 5th game, started every game for the rest of the 2013 season. Elting won the quarterback battle to be the 2014 starter as well, but was later replaced by Austin Appleby after 5 games.
Document 11: Jon Spector: Jonathan Spector is president and chief executive officer of The Conference Board. Spector, a graduate of Wesleyan University and Harvard Business School, joined The Conference Board after serving as vice dean of The Wharton School at the University of Pennsylvania. During his tenure at Wharton School, Spector was responsible for the significant growth and strategic repositioning of the school’s executive education activities, and for strengthening Wharton’s involvement in book publishing, globalization and collaborations across the university. Before joining The Wharton School he spent 20 years with McKinsey & Company, where he was a senior partner in the firm. He serves on the board of directors of The Demand Institute, The Conference Board of Canada, and the March of Dimes Foundation. He is the co-author of We Are Smarter Than Me (2007), which highlights the ways in which businesses can harness the power of collective intelligence.
Document 12: Allen &amp; Company Sun Valley Conference: The Allen & Company Sun Valley Conference is an annual media finance conference hosted and wholly independently funded by private investment firm Allen & Company. The conference has taken place in Sun Valley, Idaho for one week each July since 1983. The conference typically features business leaders, political figures, and major figures in the philanthropic and cultural spheres. Previous conference guests have included Bill and Melinda Gates, Warren and Susan Buffett, Tony Blair, Google founders Larry Page and Sergey Brin, Allen alumnus and former Philippine Senator Mar Roxas, Google Chairman Eric Schmidt, Yahoo! co-founder Jerry Yang, Facebook founder Mark Zuckerberg, Media Mogul Rupert Murdoch, eBay CEO Meg Whitman, BET founder Robert Johnson, Time Warner Chairman Richard Parsons, NBA player LeBron James, Governor Chris Christie, entertainer Dan Chan, Katharine Graham of "The Washington Post", Diane Sawyer, InterActiveCorp Chairman Barry Diller, Linkedin co-founder Reid Hoffman, Sandro Salsano from Salsano Group, and Washington Post CEO Donald E. Graham, and Oprah.
Document 13: Gerald B. Lefcourt: Gerald B. Lefcourt is a criminal defense lawyer with a reputation for taking on unpopular and high-profile clients, including such clients as the Black Panthers, Abbie Hoffman, Harry Helmsley, a co-defendant of Michael Milken, former New York State Assembly Speaker, Mel Miller, Russell Crowe, and Tracy Morgan. He was a featured personality in the 2006 documentary Giuliani Time. Recent victories include a full acquittal of rap mogul and Murder, Inc. Records founder Irv Gotti on federal money laundering charges. Lefcourt is currently one of the attorneys in the federal KPMG tax shelter fraud prosecution, believed to be the largest tax fraud case ever brought in the history of the United States.
Document 14: Greg McElroy: Gregory Vincent "Greg" McElroy, Jr. (born May 10, 1988) is a former American football quarterback of the National Football League. He was drafted by the New York Jets of the National Football League (NFL) in the seventh round of the 2011 NFL Draft after playing college football at Alabama. During his high school career, McElroy won several awards including being named an EA Sports All-American and winning a Texas 5A state championship for Southlake Carroll. He was the starting quarterback for the Crimson Tide football team. As a junior, he led the Crimson Tide to an undefeated 14–0 season, which included the 2009 SEC Championship and BCS National Championship.
Document 15: Greater Talent Network (GTN): Greater Talent Network Speakers Bureau (GTN) is an American speakers bureau based in New York. GTN is known for its roster of prominent clients, including authors Michael Lewis, P.J. O'Rourke and Jeffrey Toobin; actors Laura Linney and Danny Glover; musicians Paula Abdul and Kenny "Babyface" Edmonds; Navy SEALs Marcus Luttrell and Kevin Lacz; athletes Alex Rodriguez and Eli Manning; sports executives Billy Beane and Bob Myers; national security experts Raymond Kelly, Valerie Plame Wilson, and General Wesley Clark; and finance/technology disruptors Dan Schulman, and Danielle Weisberg and Carly Zakin, founders of theSkimm.
ground_truth: Eli Manning