Singapore, April 26 -- Jeongwoo Ham maintained his tempo, consistency, and hydration for a third straight day to retain his solo lead and return a three-under round - 13-under overall - to open a four-stroke lead going into the deciding day of the $2million International Series Singapore here on Saturday. The South Korean, gunning for a maiden Asian Tour win, entered the competition as a largely unknown commodity outside of his country where he has been a four-time winner on the Korean PGA Tour. But neither the stage nor the brutal conditions have deterred him so far. The 31-year-old, who turned professional in 2018, fired five birdies to go with a couple of bogeys -one on either nine- to ward off challenge from Australia's Cameron John who...