Sinner battles past Borges as tough start to Wimbledon title defence continues

Italian wins 7-6 (4), 7-6 (2), 6-4 in second roundNext faces the unseeded American Jenson BrooksbyJannik Sinner is not making it easy for himself this year. Matches he would have expected to sprint through here have become mini-marathons and there is the small matter of another heatwave arriving in London this weekend, which, as we saw in Paris, is his kryptonite.More worrying, as Sinner admitted after reaching the last 32 with a 7-6 (4), 7-6 (2), 6-4 victory over the world No 48, Nuno Borges, h...