This weekend’s traffic hotspots include South Philadelphia this evening, Kelly Drive on Saturday, and the route of Sunday’s bike race, from Logan Square to Kelly Drive to Manayunk.Shore-goers have two reasons to get an early start today. The Phillies take on the Florida Marlin at 7:05 p.m. at Citizens Bank Park, which could jam major roads near the sports complex. Also, showers and thunderstorms are in the forecast, with heavy rain more likely after about 9 p.m. To check the forecast, go to Philly.com’s weather page.