#1 Owen Hart and Bret Hart
As members of the Hart Wrestling family, Owen and Bret were passionate about the sports from the start of their lives. They would later join the sport their father competed in and would go on to win several accolades together and alone. In 1993, Owen crashed with his senior brother, Bret in a tag team match against Shawn Michaels and his team.
They engaged in a heated exchange right after the match. Owen, who was apparently angered by being in his brother's shadows, challenged him to a match, but Bret declined.
Later in their tag team match, Bret who appeared injured tried to tag his brother Owen but he would decline and rather hit him in his injured knee. He would further continue his assault on his brother backstage. This started a heated feud between the two brothers who faced off at Wrestlemania 20 where Owen pinned his brother for the first time.
They would continue feud several times in 1994 and prominently in two matches at Summerslam and in a lumberjack match. Their feud was voted by Pro Wrestling Illustrated as the feud of the year. Both Bret and Owen had great success during their wrestling careers.