With excessive heat blanketing the Midwest and eastern United States and Canada, numerous tracks have adjusted their schedules or canceled cards for the next few days. The following is a list of changes: Sunday Canterbury Park – canceled Hawthorne – canceled Woodbine – First post moved to 4 p.m. Eastern Monday Finger Lakes – canceled Parx Racing – canceled Tuesday Parx Racing – canceled Wednesday Delaware Park – canceled :: Want to learn more about handicapping and wagering? Check out DRF's Handicapping 101 and Wagering 101 pages.