By David Wetzel New York (Knewz) — Baseball stadiums better have plenty of ketchup, mustard and relish on hand this year. According to the National Hog Dog and Sausage Council, MLB fans will consume 19.1 million hot dogs and nearly 5 million sausages while attending games this season. The MLB season held Opening Day on March 7. “Baseball is back and fans are once again excited to enjoy sunny games in a stadium with juicy ballpark frank in their hands,” said NHDSC President Eric Mittenthal. “We can all be thankful this MLB season is kicking off today and that we have a full season to enjoy deli…