With one-third of the 2013 harness racing season complete, Trot Insider takes a look at the Canadian leaderboard for drivers and trainers heading into the month of May.

Jody Jamieson continues to lead all drivers in the earnings category with his mounts banking $1,397,347 in purses so far this year while Billy Davis Jr. maintains the edge in the win column with 162. Trevor Henry sports the highest winning percentage at 0.384.

In the trainer standings, Richard Moreau is the top money earner with $1,057,800 banked in purses -- nearly double his nearest competitor -- and has edged ahead in the win column to lead with 110. Meanwhile, 20-year-old Patrick Shepherd boasts a chart-topping win percentage of 0.479.

To keep tabs on harness racing's season leaders, click here.

**All statistics include Canadian starts from January 1, 2013 to April 30, 2013.