During his active career (1993–1999; 2002), Henley threw and batted right-handed; he stood 6 feet 2 inches (1.88 m) tall and weighed 190 pounds (86 kg). He graduated from Mobile County High School in Grand Bay, Alabama, and was selected in the 26th round by the Montreal Expos (predecessors to the Nationals) in the 1991 Major League Baseball draft.[2] Fighting persistent injuries, Henley broke into pro baseball in 1993, then progressed through the Montreal farm system, batting over .300 twice.
But 1998 would be his only Major League season, and his last full season as an active player. Beset by elbow miseries, he played in only two minor league games in 1999 and missed the 2000 and 2001 campaigns completely. Released by the Expos, he got into one minor league game with the Class A Hickory Crawdads, a Pittsburgh Pirates affiliate, in 2002 before retiring from the field.
Coaching career
Henley rejoined the Montreal system in 2003 as manager of the Rookie-Level Gulf Coast League Expos, and remained in the organization after the Expos relocated to Washington, D.C., in 2005, managing at the Rookie and Class A levels through 2009, and serving as the Nationals' field coordinator of minor league instruction from 2010 to 2013, leading to his promotion to Williams' staff.[6] He was fired with Williams and the rest of the coaching staff after the 2015 season,[7] but was rehired to serve under new manager Dusty Baker.[8] His contract expired after the 2017 season,[9] but Henley was again rehired as third base coach, becoming the only holdover from Baker's coaching staff to join the new staff headed by manager Dave Martinez.[10] On October 10, 2021, Henley was removed from his major league role but remained in the organization in a player development role.[11]