The Indy 500 is the biggest race on the season and it's even bigger this year as it is the 100th anniversary running of it. There are the usual Team Penske and Chip Ganassi Racing contenders who are the favourites, but what might be more interesting are the Bump Day battles to qualify.

Bump Day at the Indianapolis Motor Speedway is unlike any other qualifying session.  There will be 40 drivers competing for 33 spots and a lot of uncertainty is in the air.  Canadian Paul Tracy knows all to well how difficult Bump Day can be as he failed to qualify for last year's race. The frustrating part for us is that the speed was in the car at various times of the day. Two days ago we were second-quickest on the track.

Bump day will be a battle of wills, timing, weather, and courage.  This is what makes racing fun - it's all on the line this weekend to get into the field.

This year will be the first time the Indy 500 will be the first oval course of the year.  If we look at who will be the favourites, we can look no further than last year's winner Dario Franchitti.  This will be Franchitti's eighth start at the Indy 500 and he already has had two celebratory milk showers.

Franchitti's biggest contender might just be his Ganassi teammate Scott Dixon.  Dixon won this event in 2008 and needs to make an impact this year after stumbling from the blocks.

One can never count out three-time winner Penske's Helio Castroneves, but if his start to this year is any indication - it doesn't look like lady luck is on his side.

Rounding out the favourites to win the 100th Indy 500 would be Penske's Will Power (has yet to win an oval race) and Ryan Briscoe, KV Racing's Tony Kanaan, and Andretti Autosport's Marco Andretti.