The Philippine Star October 18, 2022 | 12:00am MANILA, Philippines — Three of the 30 foreign triathletes vying in the Alveo 5150 Subic Bay look to stir up the chase for the overall championship when the premier endurance race held under the Olympic-style setup is fired off on Sunday in the country’s top triathlon hub. Singapore’s Liam Chan, Korean Hyunji Ko and Byron Sanborn of the United States have stepped up their preparations for the upcoming 1.5km swim, 40km bike and 10km run event, seeking to spoil the local bets’ expected control of the season’s third and last 5150 race. “We are finally…