Evidence is a key element necessary to reach a verdict in legal cases. The two main categories of evidence include physical and testimonial evidence. Physical evidence is considered a tangible object that can be associated with the victim or the criminal (Mason et al., 2005). Mason et al. (2005) refers to testimonial evidence as an allegation, written or oral, provided by the witness or victim. Compared to testimonials, Mason et al. (2005) considers physical evidence a more reliable source of information because testimonies are subjective to the witness or victim. Testimony is based on a precise memory of all the events that occurred (Mason et al., 2005). Subjectivity also comes from a biased or inaccurate perception that distorts the facts. In many cases, an expert witness, possessing extensive knowledge and qualifications on the subject, will constitute expert testimony without being an actual eyewitness to the crime (Fed. R. Evid. 702). Testimony in the trials of major league athletes generally consists of a combination of eyewitness testimony and testimony trained by expert witnesses. Examples can be found in major league sporting events of athletes belonging to the National Football League (NFL), Major League Baseball (MLB), the National Basketball Association (NBA), and the National Basketball League. hockey (NHL). Tony Martin, a wide receiver for the Miami Dolphins (NFL), was accused of money laundering to serve as a front for Rickey Brownlee (Nobels, 1999). Two teammates, Dan Marino and Nat Moore, testified before a jury. Dan Marino's testimony focused on demonstrating Martin's good morals and values. Nat Moore's testimony embodied Martin's respectable qualities and characteristics, all...... middle of paper ......02.Dexter, P. (1987, 05 11). The case against Brian Spencer. Sports Illustrated, 66(19), 68-77. http://sportsillustrated.ca/vault/article/magazine/MAG1065957/index.htm Eder, Steve. "Rodriguez's 'Gummies': Files Detail Doping, Down to the Milligram." The New York Times, January 14, 2014, late edition - final edition, sec. Sports office; SECTA. Manson, G. and Mauro, J. (2005). Data analyst training - types of evidence. http://www.nfstc.org/pdi/Subject01/pdi_s01_m01_01.htmNobels, C. (1999). Marino testifies at a teammate's trial. New York Times. http://search.proquest.com.mutex.gmu.edu/docview/110027051?accountid=14541O'Driscoll, P. (2004, 05 11). Bryant's accuser goes to closed-door hearing. The United States Today. http://eds.a.ebscohost.com.mutex.gmu.edu/ehost/detail?sid=84fccb6d-8aef-44ce-8027e4cafa6383f1@sessionmgr4004&vid=1&hid=4205&bdata=JnNpdGU9ZWhvc3QtbGl2ZSZzY29wZT1zaXRl