Vessey had the performance of her life in winning the women's 800 meters convincingly in the fastest time in the world thus far in 2009 of 1 minute 57.84 seconds at the Hurculis Super Grand Prix meet in Monaco on July 28. Her performance was a new personal best by more than two seconds, and it placed her on the Team USA roster for the 2009 World Outdoor Championships in Berlin by easily bettering the 'A' qualifying standard of 2:00.00. Vessey's time is the fastest by an American since Jearl Miles-Clark topped the U.S. list in 2004 with her clocking of 1:57.27. Vessey’s performance ties her for seventh place with Joetta Clark on the all-time U.S. list...Vessey provided a preview of what was to come with her stunning victory June 7 at the Nike Prefontaine Classic, which she entered as a last minute “lane filler.” Vessey won the race in a then personal best 2:00.18, and defeated reigning Olympic champion Pamela Jelimo in the process.

2009: 1st at Monaco (1:57.84PR), which bettered the A qualifying standard for the World Championships…4th at the USA Outdoors (2:01.19)…1st at Nike Prefontaine Classic (2:00.18) defeating Olympic champion, Pamela Jelimo…4th at Reebok Grand Prix Classic (2:01.49)
2008: 5th at the 2008 US Olympic Trials (2:02.01)...ranked #7 in U.S. by T&FN...best of 2:02.01
2007: Best of 2:11.57.
2006: Injured, did not compete.
2005: Runner-up at NCAA Outdoors (2:03.10)...7th at USA Outdoors (2:06.23)....Big West Outdoor runner-up...ranked #9 in U.S. by T&FN...best of 2:03.10.
2004: Redshirt.
2003: Big West Outdoor champ...7th in prelims at NCAA Outdoors (2:08.89)...8th in prelims at USA Outdoors (2:08.12)...best of 2:05.78.