Forty-nine athletes have qualified based on results from the trials this weekend, but the full team is yet to be named as there are still opportunities for others.

According to the JAAA, "The door remains open for those who have not attained the qualifying mark for certain respective events, such as some of the females in some field events, for instance." Kateema Riettie, who threw 52.51m to win the women's javelin is among those who will be looking to get a standard over the next few days. TheOlympic women javelin 'A' standard stands at 61m, with the 'B' standard at 59m. Riettie has so far thrown 53.65m since the window opened on May 1, 2011.

Jamaica is also yet to qualify a female high jumper, with no one satisfying the 1.92m (B) or 1.95m (A) standards. Wilbert Walker has yet to meet the 16.85m (B) standard in the triple jump with a best of 16.33m.

Leading the line of qualifiers is triple Olympic champion and world record holder Usain Bolt, who, despite his double loss to world 100m champion Yohan Blake over the weekend, will enter this summer's Olympic Games as the man to beat in both the 100m and 200m events.

Double national sprint champion Shelly-Ann Fraser-Pryce also secured her chance to defend the Olympic 100m title she won in Beijing four years ago, after bettering two-time Olympic 200m champion Veronica Campbell-Brown over the 100m and 200m at the trials, the two forming a formidable 100m trio with silver medallist from two years ago, Kerron Stewart.

Blake underlined his ability and, heading to his first Olympic Games, is now being touted as Bolt's chief challenger in both sprints. First-time senior team qualifier, Warren Weir, is also expected to continue his remarkable improvements in London.

Weir, who works out alongside Bolt and Blake at the Racers Track Club, finished third in the 200m at the trials and has developed significantly into a sub-20-seconds sprinter, since taking up the event full-time in the past year.