2010: Earned All-America honors indoors, helping Baylor's 4x400-meter relay team to a runner-up finish with a season-best time of 3:05.01...Ran opening leg of Big 12 champion 4x100-meter relay team...Helped Baylor to Drake Relays titles in the 4x100, 4x200 and 4x400-meter relays...Earned all-Big 12 honors indoors in the 4x400-meter relay finishing second and the 400 meters with a season-best time of 46.80 to place third...Won the 4x400-meter relay at the indoor Texas A&M Invitational and the 4x100-meter relay at the outdoor Texas Relays...Placed fourth at the Texas Invite in the 400 meters with a season-best outdoor time of 45.69...Placed eighth in the 400 meters (45.92) at the NCAA West Preliminary Rounds to qualify for the NCAA Outdoor Championships, but suffered an injury at nationals...Finished third in the 400 meters at the Big 12/Pac-10/SEC Challenge with a time of 46.83.
2009: Earned All-America honors in the 4x400-meter relay, running second leg on Baylor's third-place finishing team that set a season-best time of 3:01.12...Missed six weeks of action due to hamstring injury, returning for the NCAA Outdoor Championships...Clocked a season-best time of 45.84 in the 400 meters to finish third at the Michael Johnson Classic...Ran second leg on Baylor 4x400-meter relays that won relay titles at the LSU Relays, Texas Relays and Drake Relays...During the indoor season, ran second leg on the 4x400-meter relay at the NCAA Indoor Championships to claim his third NCAA title, and Baylor's fifth-straight overall...An NCAA qualifier in the 400 meters, finished 13th overall with a time of 47.43...Earned All-Big 12 honors in the 400 meters finishing second with a season-best time of 46.60.
2008: Won the gold medal at the 2008 IAAF World Junior Championships in Bydgoszcz, Poland, with a world junior-leading time of 45.53...Also won a gold medal at the World Junior Championships as the lead-off leg of the winning 4x400-meter relay...Placed second at the USA Junior Outdoor Championships with a time of 46.02...Ran the lead-off leg on Baylor's national champion 4x400-meter relay that won its fourth-straight NCAA title...Championship relay time of 3:00.22 ranks as the second-fastest in Baylor history and the fifth-fastest collegiate time ever...Earned All-America honors as the lead-off leg of the 4x100-meter relay that placed sixth at the NCAA Championships with a time of 39.47...Team clocked a season-best time of 39.37 at the Big 12 Outdoor Championships...Ran the lead-off leg on Baylor's Midwest Region champion 4x400-meter relay...Earned All-Midwest Region and All-Big 12 honors as the lead-off of the 4x100-meter relay...Ran the lead-off leg on Baylor's Big 12 Outdoor champion 4x400-meter relay...Ran on Baylor's winning 4x100- and 4x200-meter relays at Drake Relays, helping the Bears to a record seven relay titles...All-Midwest Region honors with a sixth-place finish in 46.06...Placed fifth at the Big 12 Outdoor Championships in 46.06...An NCAA qualifier in the 400 meters, placed 18th overall...During the indoor season, ran the second leg on Baylor's NCAA Indoor champion 4x400-meter relay that won its third-straight relay title...The time of 3:05.66 ranked as the fastest time in the world for 2008...Ran the second leg on Baylor's Big 12 Indoor champion 4x400-meter relay...Finished 16th overall at the Big 12 Indoor Championships with a time of 49.36...Clocked a season-best time of 48.09 to place sixth at the Arkansas Invitational.
High School: Two-time letterwinner in track and field at North Crowley High School for head coach David Standifer...Finished second in the 400 meters at the state championships as a senior with a top time of 46.81...Placed second in the quartermile as a junior with a season best 47.45...As a senior, won the National Scholastic Indoor Championship in the 400 meters with a time of 47.54...Won district titles in the 200 meters (21.50) and 400 meters (47.03) as a senior...Ran second leg on the 2007 USATF Junior champion 4x100-meter relay squad that finished with a time of 40.21...His 4x400-meter relay team placed second at the Junior Olympic Championships with a time of 3:07.68.
Personal: Full name is Marcus D. Boyd...Born March 3, 1989, in Fort Worth, Texas...Son of Victor and Ella Boyd...Has two younger siblings, brother Phillip and sister Hollie...Majoring in business.