Never heard of one of them! Never!!
The first M to be younger than me (Birthdate: Oct. 14, '57) was some pitcher guy named Rafael Vasquez in 1979. He was born on June 28th, '58, and appeared in a total of 9 games in April and May of '79. That was his total MLB experience. He was sent down and never came up again, for any team. But he left the game with a 1-0 record, 16 innings and an ERA of 5.06. Rafael, we hardly knew ye!
The last M to be older than me was lefty Tony Fossas in 1998. He was born on Sept. 23rd, '57. He cae out of spring training with them M's in '98, appeared in 23 games, the last one on June 1st, then was released on June 10th. He played with the Cubs and Rangers that year, and pitched in 5 games with the yankees the next. He was 0-3 with the M's, with an ERA of 8.74 in 11.1 inninigs (a loogy). No wonder he was released. He had some decent loogy years, actually. And I remember his name. He appeared in 567 MLB games.
That's it for me.