In the second game of a doubleheader with the Boston Red Sox at Fenway Park, he nearly pitched a five-hit shutout; Rico Petrocelli hit a solo home run to tie the score with two outs in the ninth inning.

He split the 1976 between starts and the bullpen before he was lost to the Toronto Blue Jays in the 1976 Major League Baseball expansion draft.

Norris was equally brilliant, but the Jays managed to squeak out a run in the bottom of the 11th to earn Jefferson the win.

He made his final appearance for Toronto on September 1, facing five batters and retiring just one while giving up three earned runs, allowing an inherited runner to score and committing an error.

He was selected off waivers by the Pittsburgh Pirates on September 11,[6] and made just one appearance for the club, beating the Chicago Cubs.