Yin and Thitikul form team of ex-No. 1s and share the lead in Dow Championship

Ruoning Yin of China and Atthaya Thitikul of Thailand started out on a heater and held it together on their back nine in foursomes Thursday for a 6-under 64, giving them a share of the lead with two other teams after the opening round of the Dow Championship. Ally Ewing and Jennifer Kupcho, Solheim Cup teammates but never partners, had an eagle late in their round and joined the Thai duo of Chanettee Wannasaen and Jaravee Boonchant as the other teams at 64. Yin and Thitikul, who both have spent time at No. 1 in the women's world ranking, made only two pars on the outward nine — and one of those was on a par 5.

Yin and Thitikul form team of ex-No. 1s and share the lead in Dow Championship

Yin and Thitikul form team of ex-No. 1s and share the lead in Dow Championship

Yin and Thitikul form team of ex-No. 1s and share the lead in Dow Championship

Yin and Thitikul form team of ex-No. 1s and share the lead in Dow Championship

Yin and Thitikul form team of ex-No. 1s and share the lead in Dow Championship