The obstruction call that ended Game 3 is the hot topic, but there's plenty more to discuss in this fascinating (and currently for the Red Sox, frustrating) World Series. Why was Brandon Workman allowed to bat in the ninth with Mike Napoli available? Will Stephen Drew return to the lineup? Can Clay Buchholz come through in Game 4? Chad Finn of Boston.com and the Globe will moderate our chat of all of this and more right here at 7 p.m. Check in below to join.