By Sam Laskaris Writer Just one team is standing in the way of the Six Nations Chiefs’ quest to host this year’s Mann Cup tournament. The Chiefs, the defending national Senior A champions, are currently battling a familiar opponent, the Peterborough Lakers, in a best-of-seven Major Series Lacrosse (MSL) championship final series. The eventual league winner will host this year’s Mann Cup championship series next month. The Chiefs captured the national title last year in British Columbia, defeating the host New Westminster Salmonbellies 4-1 in a best-of-seven series. The Six Nations club had advanced to the 2023 Canadian final by sweeping the Lakers 4-0 in their MSL championship. That ended Peterborough’s reign of four consecutive Mann Cup championships. The Lakers had won the national crown in 2017, ’18, ’19 and…