Junior (2007): Posted a regional-qualifying time of 13.87 in the 110-meter hurdles prelim at the California Collegiate Challenge, in which he took fifth in a regional-qualifying 14.07 in the final... clocked a 13.98 to place fourth in the 110 hurdles at the NCAA West Regional...at the NCAA championships, advanced to the semifinal of the non-decathlon 110-meter hurdles by running a time of 13.90 and taking 14th place in the preliminaries, and later in the semifinal, he ran a lifetime-best 13.74, but placed 11th and did not advance to the final...competed in the 110-meter hurdles at the USA championships...led off the 4x100-meter relay that posted a season-best 41.34 to win at the Big Meet...in all, Mack won four events at the Big Meet, including the 200 (lifetime-best 21.62), 100-(wind-aided 10.57) and 110 hurdles (wind-aided 13.95)...ran a provisional-qualifying and lifetime-best 7.96 in the 60-meter hurdles prelim at the MPSF championships...clocked a season-best 22.59 in the 200 at the Dan DeHart Invitational.
(2006): Redshirted outdoors...during the indoor season, recorded a lifetime-and Cal season-best 8.03 in a qualifying heat of the 60-meter hurdles and later took eighth in the final at the MPSF championships...ran a lifetime-best 7.02 in the 60 meters in the Arizona-California Challenge.
Sophomore (2005): Ran Cal's best time of the season in the 110-meter hurdles (14.12/Illinois) and the season's best time in the 400-meter hurdles (52.49/Brutus Hamilton)...ran the last leg of the 4x100-meter relay and helped his team earn the best mark of the season in the NCAA West Regional (40.53).
Freshman (2004): A Pac-10 qualifier in the 110-meter hurdles with a season best mark of 14.42 at the Big Meet...also posted his season best in the 400-meter hurdles (53.92) at the Big Meet.
High School: A 2003 graduate of Bakersfield High School...2002 California state champion in 110HH and 300IH...Bakersfield High School was 2002 California state team champion.
Personal: Born in Bakersfield, Calif....mother is Cynthia Sosa...French major.