Kenneth enjoyed his finest season in 2007, which featured a Track & Field News world ranking of 7th in the world and fourth place finish at the USA Outdoor Championships. His win at the 2007 Adidas Track Classic in Carson, Calif., lowered his personal best time in the 400m hurdles to 48.15 seconds.

In 2005, Ferguson had a strong season as an elite athlete following a stellar career in the junior ranks, he ran a personal best (48.51) at the Adidas Track Classic and a sixth-place finish at the USA Outdoor Championships. In 2003, Ferguson set a Pan American Junior Championships record in winning the men's 110m at the Barbados National Stadium in Waterford, St. Michael in a time of 13.60 seconds. Ferguson continued his winning streak after striking gold in the 400m hurdles with a time of 50.07 seconds. The Detroit, Mich., native ran the third leg on the 4x400m relay team that set a Pan American Junior Championships record of 3:02.88. At the 2003 USA Junior Championships, Ferguson won the 110m hurdles and 400m hurdles in a single day. The South Carolina freshman first won the high hurdles in a time of 13.60. Exactly three hours later, Ferguson won the 400m hurdles in an even more impressive performance. The Southeastern Conference champion dominated the field before jogging across the finish line in 50.70 seconds – more than a full second ahead of second-place Adrian Walker of Illinois (51.73).

Prior to the World Juniors, Kenneth won the 400m at the World Pre-Meet in the Bahamas, hitting a personal best 46.58. At the USA Junior Olympics, he won the 110m hurdles with a time of 13.73 and was second in the 400m hurdles at 49.83. He is the state record holder in the indoor 60m hurdles (7.75), 110m hurdles (13.61), the 300m hurdles (35.90) and the 4x400m relay (3:13.70).

Ranked fourth nationally all-time in the college hurdles as a prep (13.83), Kenneth won the 110m hurdles with a time of 13.60 and paced the 400m hurdles field with a time of 50.7 at the Pan American Junior Championships in 2003 to become the meet's only double-winner. Kenneth collected three gold medals (400m hurdles, 110m hurdles, 4x400 relay) at the Junior Pan American Games in Barbados. He established a new Junior Pan Am Games record in the 110m hurdles by posting a time of 13.60, breaking a 23-year old record. He also helped the 4x400 relay team set a new Junior Pan Am Games record time.

Career Highlights:
2008
- 4th place 400mH Luzern

2007
- 1st place 400mH Adidas Track Classic
- 2nd place 400mH Reebok
- 2nd place 400mH Tsiklitiria
- 2nd place 400mH Athens GP
- 2nd place 400mH Norwich Union London
- 3rd place 400mH ISTAF
- 3rd place 400mH Rieti Grand Prix
- 3rd place 400mH 23rd Vardinoyannia Greece
- 3rd place 400mH semifinals USA Outdoor Championships
- 4th place 400mH US Championships
- 6th place 400mH WAF

2006
- 1st place 400mH GE Money Grand Prix
- 1st place 400mH Road to '08
- 1st place 400mH NACAC Santo Domingo
- 4th place 400mH London Grand Prix

2005
- 1st Place 400mH Glasgow
- 1st Place 400mH Martinique
- 2nd Place 400mH Home Depot
- 3rd Place 400mH Thales Fanny Hengelo
- 4th Place 400mH Paris

2004
- 1st place 400mH Occidental invitation
- 3rd place 400mH Home Depot Invitational

2003
- 1st place Florida Relays
- 1st place 110mH Pan Am Games
- 1st place 400mH Pan Am Games
- 1st place 4x400m Pan Am Games
- 1st place 4x00m SEC Championships
- 1st place 400mH SEC Championships
- 1st place 110mH USA Jr. Championships
- 1st place 400mH USA Jr. Championships