Alexei Popyrin became the first Australian ATP Masters 1000 champion in 21 years, after winning the Montreal final on Monday. Popyrin stunned world number six Andrey Rublev as he charged to a 6-2, 6-4 win, becoming the first Australian Masters 1000 winner since Lleyton Hewitt won Indian Wells in 2003. “It means the world, for all the hard work I’ve put in over the years, all the sacrifices I have made,” said Popyrin. “Not just me, but my family, my girlfriend, my team, everybody around me. They have sacrificed their whole lives for me and for me to win this for them is just amazing.” In Toront…