The Mets drafted pitcher Don Shaw in the 35th round of the 1965 amateur draft. After working his way through their minor-league system Shaw made his Major League debut on opening day in 1967, he pitched the 9th inning in the Mets 6-3 loss to the Pittsburgh Pirates and gave up 2 hits and 1 run. Shaw spent the rest of the season pitching out of the Mets bullpen and appeared in 40 games posting a 4-5 record with a 2.98 ERA.
The Mets looked to trade Shaw during the off-season but he had become a favorite of general manager M. Donald Grant who blocked any trade. Shaw spent the majority of the 1968 season in the minors but did manage to appear in 7 games for the Mets. In 12 innings, he pitched to a 0.75 ERA.
Following the season the Mets left Shaw unprotected in the expansion draft and he was selected by the Montreal Expos. In 47 games for the Mets over two seasons, Shaw won 4 and lost 5 while pitching to a 2.56 ERA.
On Opening Day 1969 Don Shaw was the winning pitcher in the Expos first ever game which just happened to be against the Mets.
While with the Mets Shaw wore number 35.
Don Shaw also played for the following teams:
Montreal Expos – 1969
St. Louis Cardinals – 1971,1972
Oakland A’s – 1972