Usain Bolt enters the 2012 Summer Games as the defending Olympic and world-record holder in all three events in which he'll participate. He may not be able to say the same as he leaves London.
He will most certainly retain those titles with the balance of the Jamaican 4x100-meter relay team. Shy of dropping the baton, the team will win the gold medal, likely in world-record time.
But Bolt will face some tight competition in his individual events. Most of it will come from his own teammates.
The following slides provide a daily overview of the 100-meter dash, the 200-meter and 4x100-meter relay. They provide start times for each event and predictions for his performance.
World Record: 9.58 seconds, Usain Bolt, Jamaica
Olympic Record: 9.69 seconds, Usain Bolt, Jamaica
Round 1: 7:30 a.m. ET (This round follows preliminaries for which Bolt and other top sprinters have a bye.)
Day one of competition should provide a good warm-up for Powell at the 2012 Summer Olympics. He'll warm up in the 100 on Saturday and shouldn't need to exert himself to advance to the semifinals on Sunday.
Bolt may not crack 10 seconds on Saturday as the slower sprinters are eliminated from competition.
At some point Bolt will have to pass the baton to Blake to be the new star of Jamaican sprinting.
Semifinals: 2:45 p.m ET
Final: 4:50 p.m. ET
This is the event that put Bolt on the map with casual track fans that see little competition outside of the Olympics. Bolt replaced Asafa Powell as the top sprinter in the world by setting the Olympic and world record.
An exuberant Bolt began his celebration with 20 meters remaining in the race or he would have been even faster.
In 2012, though, Bolt is the established sprinter and Yohan Blake is the up-and-coming star. Bolt will likely turn the reins over to Blake at some point. The question is: will it be in 2012?
I do not see Bolt bettering the world record. He has battled back issues this year and hasn't been in his usual form. He will be pushed by his teammates and an American or two in the final.
The 2012 Olympic champion, and new fastest man in the world title, will go to Blake. Bolt will be close and take the silver medal.
There should also be a tight race for the bronze with Powell facing a challenge from the Americans.
World Record: 19.19 seconds, Usain Bolt, Jamaica
Olympic Record: 19.30 seconds, Usain Bolt, Jamaica
Round 1: 6:50 a.m. ET
Bolt was able to rebound from a false start in the final of the 100 at the 2011 World Championship to come back and win the 200. He'll need to make a similar push at the Olympics.
Bolt will likely be just under 20 seconds in his first race as he transitions from the 100.
Bolt rebounded after his false-start in the 100 at the 2011 World Championships.
Semifinals: 3:10 p.m. ET
Bolt will want to notify the field of his intent to maintain his 200-meter crown. He'll be racing for lane position to set him up to win the final.
Don't be surprised to see Bolt post a time in the 19.55 second range.
Final: 3:55 p.m. ET
This race will have sprinters aside from Bolt and Blake, but none of them will be in view of the finish line camera when these two hit the tape.
In a reversal of the 100, Bolt will rebound in his best event to take gold.
Blake should be in position for silver, with fellow countryman Jason Young battling with Wallace Spearmon of the U.S. and Frenchman Christophe Lemaitre.
Jamaica could sweep in both the 100 and 200.
World Record: 37.04, Jamaica
Round 1: 2:45 p.m. ET
Jamaica may opt to rest Bolt and give another competitor an opportunity to earn a medal. Bolt will be coming off the 200 and a rest prior to the finals could be in order.
Asafa Powell, Nesta Carter and Michael Frater will all likely run on Friday. Jamaica could decide to give Blake an opportunity to anchor the team, preparing him for the future of the Jamaican relay team.
Final: 2:45 p.m. ET
Bolt will be on the track for this event and likely lead the team down the final stretch. He'll likely take a handoff from Blake, with Powell and Carter manning the first two stations.
The only question that will be left unanswered by the time he gets the baton, though, is if the team can get under 37 seconds.
They will, setting a new world record and continuing the Jamaican dominance in this event.