One game, one inning. That was Mike Mendoza's entire major league career, with the 1979 Houston Astros. To date, no one (around here, at least) has come up with a color photo of the big right-hander with the Astros. A colorized head shot was used in a custom card set we've seen, but this up close and personal shot is definitely Mendoza -- who never pitched for the Mariners, majors or minors.
Now a successful realtor, his bio page indicates he retired from baseball in 1983. He had a decent season in the Mexican League in '82 (9-10, 2.72), so this figures to be a spring shot in either season. He was in camp with the Astros from 1974-80, with the Mets in '81.