South Korea’s Hyo Joo shares the second-round lead with China’s Ruoning Yin, who tied for the best round of the day, at the DIO Implant LA Open on Friday in Palos Verdes Estates, Calif. Yin shot a 7–under-par 64, leaving her at 10–under 132, level with Kim, who carded her second consecutive 66. Ruoning Yin…