Here's a "missing" 1972 card for a guy that I'll admit barely makes
 my informal requirements for such a creation: former Cleveland Indians 
pitcher Mark Ballinger:
Ballinger played his only Major League action during the 1971 
season, really only a month between the middle of August to the middle 
of September, appearing in 18 games for the Tribe, posting a 1-2 record 
with a 4.67 ERA and 25 strikeouts over 34.2 innings
 of work.
That would be it for him on a Major League mound, as he'd toil in 
the Minor Leagues up until 1979 pitching for the Angels and Royals 
double and triple-A teams.
But it sure is fun creating cards for players with such brief careers like this! Many more to follow in the coming months!
