CREATE TABLE table_2151643_3 (opponents VARCHAR, outcome VARCHAR, surface VARCHAR)
SELECT opponents FROM table_2151643_3 WHERE outcome = "Winner" AND surface = "Grass"
ใครคือคู่ต่อสู้ที่นำไปสู่ผลลัพธ์ของผู้ชนะบนพื้นหญ้า?
Who were the opponents that led to an outcome of winner on a grass surface?