The original plan was for Morton to provide long relief in the 1970 season but he would get a spot start in the second half of a doubleheader at the end of April against the Giants after three relief appearances to start the season in Cincinnati, St Louis and Chicago.
He would go eight innings, only giving up two runs for a win and earning himself another start in Los Angeles against the Dodgers early in May, giving up only an unearned run in nine innings. He would beat the Giants again, this time in Montreal, despite giving up five runs before taking a loss against the New York Mets.
The rest of May was a struggle, not going more than three innings in his next five appearances over three starts and a pair of bullpen efforts. June and July saw him make seven starts in each month and while there was not a lot of consistency, there were some games where he really started to stand out.
A complete game shutout at the Philadelphia Phillies was his first win in a stretch of eight W’s in a nine-game span as he started to really find his stride and gain the attention that would see him win the Rookie of the Year award at the end of the season. The last three of those were all complete game efforts, part of the 10 that he would hurl over the campaign, four of which were shutouts.
As the year turned to August, things didn’t go right for him, winning just a single start during the month, dropping his record to 15-10 in the process. A home game on the 29th saw Morton throw 10.2 innings only to take the loss against the Cincinnati Reds. That was how the month of August went, the run support that he had enjoyed all season dried up, losing 1-0 to the Atlanta Braves. A gentleman by the name of Henry Aaron drove in that sole run that day, the 100th of the season for the future Hall of Famer.
The final month of the season saw Morton pick up three more wins, including a pair of complete game shutouts. The second one of those was an 11-inning effort to keep the Cardinals off the board in Montreal. Morton would end the season with a record of 18-11 across 284.2 innings and an ERA of 3.60.
Morton would make 112 plate appearances that season, batting .161. Two doubles and two home runs would help drive in seven along with a pair of sacrifice flies and 11 sacrifice bunts.
Of the 24 voters from the baseball writers, Morton would gain 11 votes for the Rookie of the Year award. In third place was a young shortstop in Philadelphia by the name of Larry Bowa, the future five-time all-star selection, dual gold glove winner and World Series champion in 1980. Morton would also gain Cy Young votes that year, finishing 9th in the rankings.