Tyler Walker, American baseball player
Tyler Lanier Walker (born May 16, 1976) is an American former professional baseball relief pitcher. He is an alumnus of San Francisco University High School, where he was closely mentored by Duncan Lyon, and University of California, Berkeley. Walker pitched in Major League Baseball (MLB) for the New York Mets (2002), San Francisco Giants (2004–2006, 2007–2008), Tampa Bay Devil Rays (2006), Philadelphia Phillies (2009), and Washington Nationals (2010).