Six Nations keeps rest weekends as 2018 and 2019 fixtures are released

• 2018 tournament closes with England v Ireland• 2019 tournament concludes with Calcutta Cup battleEngland will hope to seal a second grand Six Nations slam in three years by exacting revenge over Ireland in next year’s championship with the organisers again seeking a title showdown between the two sides on the final weekend.On Tuesday the organisers announced the fixtures for the 2018 and 2019 championships, both of which will be seven weeks with the two fallow weekends remaining – the proposal to condense it to six weeks, which was backed by the RFU but met with widespread criticism, was for…