Usain Bolt is preparing to light up the London 2012 Olympic Games later this week. The sprinter is the defending Olympic champion and world record holder of every single event he will compete in at this year's Games. However, the competition is more fierce than ever, and many are now suggesting Bolt may have his work cut out to retain his three titles. Below are details of all of Bolt's events and race schedules.

Bolt is looking forward to competing in the 100 meter sprint, the 200 meter, as well as the 4x100 meter relay.

Most believe that Jamaica and Bolt have the relay 4x100 meter event in the bag. With the top sprinters in the world in their ranks this event truly is Jamaica's to lose. However, the relay has a history of springing up surprises, and many favorites in the past have found the pressure of the occasion has gotten to them, so the Jamaica relay team would do well to relax and just make sure they make no major slip ups.

For the two other individual races Bolt faces stiff opposition, especially from his Jamaican teammates. Bolt will have to be in his best form to ensure he takes the 100 meter dash and the 200 meter event. However, he is the man thousands are looking forward to seeing at this year's Olympic Games and he will be sure to receive the biggest cheer from the crowd who will be willing him to cross the finish line in first, and hopefully in world record time. Yohan Blake and Asafa Powell will be Bolt's main threats in the 100 meter dash.

Below are the dates and times of all of Usain Bolt's races at the London 2012 Olympic Games:

100 METER DASH

Day 8: Saturday, August 4

100 Meter Dash
Preliminary round: 5:00 a.m. ET

Round 1: 7:30 a.m. ET

Day 9: Sunday August 5, 100

100 Meter Dash

Semifinals: 2:45 p.m. ET

Final: 4:50 p.m. ET

200 METER

Day 11: Tuesday, August 7

200 Meter

Round 1: 6:50 a.m. ET

Day 12: Wednesday, August 8

200 Meter

Semifinals: 3:10 p.m. ET

Day 13: Thursday, August 8

200 Meter

Final: 3:55 p.m. ET

4x100 METER RELAY

Day 14: Friday, August 9

4x100 Meter Relay

Round 1: 2:45 p.m. ET

Day 15: Saturday, August 10

4x100 Meter Relay

Final: 2:45 p.m. ET