World champion Sha’Carri Richardson of the United States reached the 100 metres final at the Paris Olympics while Jamaican twice gold medallist Shelly-Ann Fraser-Pryce pulled out just minutes before her race in a big shock. It was not clear immediately why the 37-year-old Fraser-Pryce withdrew, with first reports suggesting she hit a hurdle during the warm-up. She won 100m gold in 2008 and 2012, bronze in 2016 and silver at Tokyo 2020. Richardson was slow out of the blocks and was beaten was St Lucia’s Julien Alfred which showed that victory later Saturday is not a foregone conclusion. Alfred …