By Sam Laskaris Writer The defending Mann Cup champion Six Nations Chiefs have earned the right to defend their national title on their home turf. The Chiefs downed the host Peterborough Lakers 11-8 on Tuesday night. That match was held at the Peterborough Memorial Centre. With that victory the Six Nations squad won its best-of-seven Major Series Lacrosse (MSL) championship final series in six games. More importantly, however, the triumph also earned the Chiefs the opportunity to host this year’s national Senior A championship series. The Western Lacrosse Association (WLA) champion Victoria Shamrocks will provide the opposition in that best-of-seven series, which is expected to start on Sept. 6. All matches will be held at the Chiefs’ home rink, the Iroquois Lacrosse Arena. A full schedule for the series is…