LYNN – Comcast is providing a second chance to baseball fans who don’t have a high-definition cable television box to watch the World Series.The company’s regional service centers will be open today until 5 p.m. instead of noon to accommodate strong consumer demand, said Comcast spokesman Marc Goodman.The Lynn Comcast center is located at 26 Tremont St.”Watching a game in the crystal-clear clarity of High-Definition is the next best thing to actually sitting in the stands,” said Paul D’Arcangelo, vice president for Comcast in Metro Boston.”The Red Sox post-season has sent demand for HD service into high-gear and we’re happy to meet that consumer demand by extending hours at select service centers for those who want to pick up an HD cable box.”The World Series is on FOX HD, which is carried by Comcast.