ST. LOUIS — Duncan Keith has sacrificed loads of his offensive inclinations this season for the sake of the Blackhawks’ protection. On Tuesday, Keith lastly hit the 100-career-goal milestone he’s sat on the cusp of for months, however the Hawks protection correspondingly collapsed in a 6-5 loss to the Blues. Keith’s power-play rocket previous Blues goalie Jordan Binnington within the first interval made him simply the fourth Hawks defenseman and, fittingly, 100th NHL defenseman all-time to attain 100 targets. The aim prolonged the 36-year-old blue-liner’s level streak to 4 consecutive video games — a streak that already included his 500th profession help and 600th profession level on Friday. It additionally jumpstarted the Hawks’ energy play, which