 On October 6, 2018, in a 5–1 loss to the Montreal Canadiens, Letang recorded his 441st assist, setting a new Penguins franchise record for most points by a defenceman.On February 11, 2019, in a 4–1 win over the Philadelphia Flyers, Letang passed Paul Coffey for most goals by a Penguins defenceman.Letang debuted internationally for Canada in his junior rookie season during the 2005 World U18 Championships in the Czech Republic.