OTTAWA, Ontario (AP) — Boston University’s Cole Eiserman broke a second-period tie and the defending champion United States beat Czechia 4-1 on Saturday night to advance to the world junior hockey championship game. The Americans will face Finland — a 4-3 overtime winner over Sweden in the first semifinal — for the title Sunday night. Finland beat the United States 4-3 in overtime in group play. Boston College teammates Ryan Leonard and Gabe…