ใครคือคู่ต่อสู้ที่นำไปสู่ผลลัพธ์ของผู้ชนะบนพื้นหญ้า?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
Who were the opponents that led to an outcome of winner on a grass surface?It is not neccessary to use all the tables.
 table_2151643_3:  (opponents [ VARCHAR ] outcome [ VARCHAR ] surface [ VARCHAR) ]
SELECT opponents FROM table_2151643_3 WHERE outcome = "Winner" AND surface = "Grass"